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package com.foursoft.vecmodel.vec120;

import org.assertj.core.api.AbstractObjectAssert;
import org.assertj.core.internal.Iterables;
import org.assertj.core.util.Objects;

/**
 * Abstract base class for {@link VecPartRelation} specific assertions - Generated by CustomAssertionGenerator.
 */
@javax.annotation.Generated(value="assertj-assertions-generator")
public abstract class AbstractVecPartRelationAssert, A extends VecPartRelation> extends AbstractObjectAssert {

  /**
   * Creates a new {@link AbstractVecPartRelationAssert} to make assertions on actual VecPartRelation.
   * @param actual the VecPartRelation we want to make assertions on.
   */
  protected AbstractVecPartRelationAssert(A actual, Class selfType) {
    super(actual, selfType);
  }

  /**
   * Verifies that the actual VecPartRelation's accessoryPart contains the given VecPartVersion elements.
   * @param accessoryPart the given elements that should be contained in actual VecPartRelation's accessoryPart.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's accessoryPart does not contain all given VecPartVersion elements.
   */
  public S hasAccessoryPart(VecPartVersion... accessoryPart) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecPartVersion varargs is not null.
    if (accessoryPart == null) failWithMessage("Expecting accessoryPart parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getAccessoryPart(), accessoryPart);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's accessoryPart contains the given VecPartVersion elements in Collection.
   * @param accessoryPart the given elements that should be contained in actual VecPartRelation's accessoryPart.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's accessoryPart does not contain all given VecPartVersion elements.
   */
  public S hasAccessoryPart(java.util.Collection accessoryPart) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecPartVersion collection is not null.
    if (accessoryPart == null) {
      failWithMessage("Expecting accessoryPart parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getAccessoryPart(), accessoryPart.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's accessoryPart contains only the given VecPartVersion elements and nothing else in whatever order.
   * @param accessoryPart the given elements that should be contained in actual VecPartRelation's accessoryPart.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's accessoryPart does not contain all given VecPartVersion elements.
   */
  public S hasOnlyAccessoryPart(VecPartVersion... accessoryPart) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecPartVersion varargs is not null.
    if (accessoryPart == null) failWithMessage("Expecting accessoryPart parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getAccessoryPart(), accessoryPart);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's accessoryPart contains only the given VecPartVersion elements in Collection and nothing else in whatever order.
   * @param accessoryPart the given elements that should be contained in actual VecPartRelation's accessoryPart.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's accessoryPart does not contain all given VecPartVersion elements.
   */
  public S hasOnlyAccessoryPart(java.util.Collection accessoryPart) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecPartVersion collection is not null.
    if (accessoryPart == null) {
      failWithMessage("Expecting accessoryPart parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getAccessoryPart(), accessoryPart.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's accessoryPart does not contain the given VecPartVersion elements.
   *
   * @param accessoryPart the given elements that should not be in actual VecPartRelation's accessoryPart.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's accessoryPart contains any given VecPartVersion elements.
   */
  public S doesNotHaveAccessoryPart(VecPartVersion... accessoryPart) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecPartVersion varargs is not null.
    if (accessoryPart == null) failWithMessage("Expecting accessoryPart parameter not to be null.");

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getAccessoryPart(), accessoryPart);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's accessoryPart does not contain the given VecPartVersion elements in Collection.
   *
   * @param accessoryPart the given elements that should not be in actual VecPartRelation's accessoryPart.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's accessoryPart contains any given VecPartVersion elements.
   */
  public S doesNotHaveAccessoryPart(java.util.Collection accessoryPart) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecPartVersion collection is not null.
    if (accessoryPart == null) {
      failWithMessage("Expecting accessoryPart parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getAccessoryPart(), accessoryPart.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation has no accessoryPart.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's accessoryPart is not empty.
   */
  public S hasNoAccessoryPart() {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // we override the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting :\n  <%s>\nnot to have accessoryPart but had :\n  <%s>";

    // check
    if (actual.getAccessoryPart().iterator().hasNext()) {
      failWithMessage(assertjErrorMessage, actual, actual.getAccessoryPart());
    }

    // return the current assertion for method chaining
    return myself;
  }


  /**
   * Verifies that the actual VecPartRelation's customRelationExpression is equal to the given one.
   * @param customRelationExpression the given customRelationExpression to compare the actual VecPartRelation's customRelationExpression to.
   * @return this assertion object.
   * @throws AssertionError - if the actual VecPartRelation's customRelationExpression is not equal to the given one.
   */
  public S hasCustomRelationExpression(String customRelationExpression) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // overrides the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting customRelationExpression of:\n  <%s>\nto be:\n  <%s>\nbut was:\n  <%s>";

    // null safe check
    String actualCustomRelationExpression = actual.getCustomRelationExpression();
    if (!Objects.areEqual(actualCustomRelationExpression, customRelationExpression)) {
      failWithMessage(assertjErrorMessage, actual, customRelationExpression, actualCustomRelationExpression);
    }

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's parentGeneralTechnicalPartSpecification is equal to the given one.
   * @param parentGeneralTechnicalPartSpecification the given parentGeneralTechnicalPartSpecification to compare the actual VecPartRelation's parentGeneralTechnicalPartSpecification to.
   * @return this assertion object.
   * @throws AssertionError - if the actual VecPartRelation's parentGeneralTechnicalPartSpecification is not equal to the given one.
   */
  public S hasParentGeneralTechnicalPartSpecification(VecGeneralTechnicalPartSpecification parentGeneralTechnicalPartSpecification) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // overrides the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting parentGeneralTechnicalPartSpecification of:\n  <%s>\nto be:\n  <%s>\nbut was:\n  <%s>";

    // null safe check
    VecGeneralTechnicalPartSpecification actualParentGeneralTechnicalPartSpecification = actual.getParentGeneralTechnicalPartSpecification();
    if (!Objects.areEqual(actualParentGeneralTechnicalPartSpecification, parentGeneralTechnicalPartSpecification)) {
      failWithMessage(assertjErrorMessage, actual, parentGeneralTechnicalPartSpecification, actualParentGeneralTechnicalPartSpecification);
    }

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refExtensionSlot contains the given VecExtensionSlot elements.
   * @param refExtensionSlot the given elements that should be contained in actual VecPartRelation's refExtensionSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refExtensionSlot does not contain all given VecExtensionSlot elements.
   */
  public S hasRefExtensionSlot(VecExtensionSlot... refExtensionSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecExtensionSlot varargs is not null.
    if (refExtensionSlot == null) failWithMessage("Expecting refExtensionSlot parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getRefExtensionSlot(), refExtensionSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refExtensionSlot contains the given VecExtensionSlot elements in Collection.
   * @param refExtensionSlot the given elements that should be contained in actual VecPartRelation's refExtensionSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refExtensionSlot does not contain all given VecExtensionSlot elements.
   */
  public S hasRefExtensionSlot(java.util.Collection refExtensionSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecExtensionSlot collection is not null.
    if (refExtensionSlot == null) {
      failWithMessage("Expecting refExtensionSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getRefExtensionSlot(), refExtensionSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refExtensionSlot contains only the given VecExtensionSlot elements and nothing else in whatever order.
   * @param refExtensionSlot the given elements that should be contained in actual VecPartRelation's refExtensionSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refExtensionSlot does not contain all given VecExtensionSlot elements.
   */
  public S hasOnlyRefExtensionSlot(VecExtensionSlot... refExtensionSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecExtensionSlot varargs is not null.
    if (refExtensionSlot == null) failWithMessage("Expecting refExtensionSlot parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getRefExtensionSlot(), refExtensionSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refExtensionSlot contains only the given VecExtensionSlot elements in Collection and nothing else in whatever order.
   * @param refExtensionSlot the given elements that should be contained in actual VecPartRelation's refExtensionSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refExtensionSlot does not contain all given VecExtensionSlot elements.
   */
  public S hasOnlyRefExtensionSlot(java.util.Collection refExtensionSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecExtensionSlot collection is not null.
    if (refExtensionSlot == null) {
      failWithMessage("Expecting refExtensionSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getRefExtensionSlot(), refExtensionSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refExtensionSlot does not contain the given VecExtensionSlot elements.
   *
   * @param refExtensionSlot the given elements that should not be in actual VecPartRelation's refExtensionSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refExtensionSlot contains any given VecExtensionSlot elements.
   */
  public S doesNotHaveRefExtensionSlot(VecExtensionSlot... refExtensionSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecExtensionSlot varargs is not null.
    if (refExtensionSlot == null) failWithMessage("Expecting refExtensionSlot parameter not to be null.");

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getRefExtensionSlot(), refExtensionSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refExtensionSlot does not contain the given VecExtensionSlot elements in Collection.
   *
   * @param refExtensionSlot the given elements that should not be in actual VecPartRelation's refExtensionSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refExtensionSlot contains any given VecExtensionSlot elements.
   */
  public S doesNotHaveRefExtensionSlot(java.util.Collection refExtensionSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecExtensionSlot collection is not null.
    if (refExtensionSlot == null) {
      failWithMessage("Expecting refExtensionSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getRefExtensionSlot(), refExtensionSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation has no refExtensionSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refExtensionSlot is not empty.
   */
  public S hasNoRefExtensionSlot() {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // we override the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting :\n  <%s>\nnot to have refExtensionSlot but had :\n  <%s>";

    // check
    if (actual.getRefExtensionSlot().iterator().hasNext()) {
      failWithMessage(assertjErrorMessage, actual, actual.getRefExtensionSlot());
    }

    // return the current assertion for method chaining
    return myself;
  }


  /**
   * Verifies that the actual VecPartRelation's refModularSlot contains the given VecModularSlot elements.
   * @param refModularSlot the given elements that should be contained in actual VecPartRelation's refModularSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refModularSlot does not contain all given VecModularSlot elements.
   */
  public S hasRefModularSlot(VecModularSlot... refModularSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecModularSlot varargs is not null.
    if (refModularSlot == null) failWithMessage("Expecting refModularSlot parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getRefModularSlot(), refModularSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refModularSlot contains the given VecModularSlot elements in Collection.
   * @param refModularSlot the given elements that should be contained in actual VecPartRelation's refModularSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refModularSlot does not contain all given VecModularSlot elements.
   */
  public S hasRefModularSlot(java.util.Collection refModularSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecModularSlot collection is not null.
    if (refModularSlot == null) {
      failWithMessage("Expecting refModularSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getRefModularSlot(), refModularSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refModularSlot contains only the given VecModularSlot elements and nothing else in whatever order.
   * @param refModularSlot the given elements that should be contained in actual VecPartRelation's refModularSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refModularSlot does not contain all given VecModularSlot elements.
   */
  public S hasOnlyRefModularSlot(VecModularSlot... refModularSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecModularSlot varargs is not null.
    if (refModularSlot == null) failWithMessage("Expecting refModularSlot parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getRefModularSlot(), refModularSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refModularSlot contains only the given VecModularSlot elements in Collection and nothing else in whatever order.
   * @param refModularSlot the given elements that should be contained in actual VecPartRelation's refModularSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refModularSlot does not contain all given VecModularSlot elements.
   */
  public S hasOnlyRefModularSlot(java.util.Collection refModularSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecModularSlot collection is not null.
    if (refModularSlot == null) {
      failWithMessage("Expecting refModularSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getRefModularSlot(), refModularSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refModularSlot does not contain the given VecModularSlot elements.
   *
   * @param refModularSlot the given elements that should not be in actual VecPartRelation's refModularSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refModularSlot contains any given VecModularSlot elements.
   */
  public S doesNotHaveRefModularSlot(VecModularSlot... refModularSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecModularSlot varargs is not null.
    if (refModularSlot == null) failWithMessage("Expecting refModularSlot parameter not to be null.");

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getRefModularSlot(), refModularSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refModularSlot does not contain the given VecModularSlot elements in Collection.
   *
   * @param refModularSlot the given elements that should not be in actual VecPartRelation's refModularSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refModularSlot contains any given VecModularSlot elements.
   */
  public S doesNotHaveRefModularSlot(java.util.Collection refModularSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecModularSlot collection is not null.
    if (refModularSlot == null) {
      failWithMessage("Expecting refModularSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getRefModularSlot(), refModularSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation has no refModularSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refModularSlot is not empty.
   */
  public S hasNoRefModularSlot() {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // we override the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting :\n  <%s>\nnot to have refModularSlot but had :\n  <%s>";

    // check
    if (actual.getRefModularSlot().iterator().hasNext()) {
      failWithMessage(assertjErrorMessage, actual, actual.getRefModularSlot());
    }

    // return the current assertion for method chaining
    return myself;
  }


  /**
   * Verifies that the actual VecPartRelation's refSlot contains the given VecSlot elements.
   * @param refSlot the given elements that should be contained in actual VecPartRelation's refSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refSlot does not contain all given VecSlot elements.
   */
  public S hasRefSlot(VecSlot... refSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecSlot varargs is not null.
    if (refSlot == null) failWithMessage("Expecting refSlot parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getRefSlot(), refSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refSlot contains the given VecSlot elements in Collection.
   * @param refSlot the given elements that should be contained in actual VecPartRelation's refSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refSlot does not contain all given VecSlot elements.
   */
  public S hasRefSlot(java.util.Collection refSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecSlot collection is not null.
    if (refSlot == null) {
      failWithMessage("Expecting refSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getRefSlot(), refSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refSlot contains only the given VecSlot elements and nothing else in whatever order.
   * @param refSlot the given elements that should be contained in actual VecPartRelation's refSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refSlot does not contain all given VecSlot elements.
   */
  public S hasOnlyRefSlot(VecSlot... refSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecSlot varargs is not null.
    if (refSlot == null) failWithMessage("Expecting refSlot parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getRefSlot(), refSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refSlot contains only the given VecSlot elements in Collection and nothing else in whatever order.
   * @param refSlot the given elements that should be contained in actual VecPartRelation's refSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refSlot does not contain all given VecSlot elements.
   */
  public S hasOnlyRefSlot(java.util.Collection refSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecSlot collection is not null.
    if (refSlot == null) {
      failWithMessage("Expecting refSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContainsOnly(info, actual.getRefSlot(), refSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refSlot does not contain the given VecSlot elements.
   *
   * @param refSlot the given elements that should not be in actual VecPartRelation's refSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refSlot contains any given VecSlot elements.
   */
  public S doesNotHaveRefSlot(VecSlot... refSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecSlot varargs is not null.
    if (refSlot == null) failWithMessage("Expecting refSlot parameter not to be null.");

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getRefSlot(), refSlot);

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's refSlot does not contain the given VecSlot elements in Collection.
   *
   * @param refSlot the given elements that should not be in actual VecPartRelation's refSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refSlot contains any given VecSlot elements.
   */
  public S doesNotHaveRefSlot(java.util.Collection refSlot) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // check that given VecSlot collection is not null.
    if (refSlot == null) {
      failWithMessage("Expecting refSlot parameter not to be null.");
      return myself; // to fool Eclipse "Null pointer access" warning on toArray.
    }

    // check with standard error message (use overridingErrorMessage before contains to set your own message).
    Iterables.instance().assertDoesNotContain(info, actual.getRefSlot(), refSlot.toArray());

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation has no refSlot.
   * @return this assertion object.
   * @throws AssertionError if the actual VecPartRelation's refSlot is not empty.
   */
  public S hasNoRefSlot() {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // we override the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting :\n  <%s>\nnot to have refSlot but had :\n  <%s>";

    // check
    if (actual.getRefSlot().iterator().hasNext()) {
      failWithMessage(assertjErrorMessage, actual, actual.getRefSlot());
    }

    // return the current assertion for method chaining
    return myself;
  }


  /**
   * Verifies that the actual VecPartRelation's relationType is equal to the given one.
   * @param relationType the given relationType to compare the actual VecPartRelation's relationType to.
   * @return this assertion object.
   * @throws AssertionError - if the actual VecPartRelation's relationType is not equal to the given one.
   */
  public S hasRelationType(VecPartRelationType relationType) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // overrides the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting relationType of:\n  <%s>\nto be:\n  <%s>\nbut was:\n  <%s>";

    // null safe check
    VecPartRelationType actualRelationType = actual.getRelationType();
    if (!Objects.areEqual(actualRelationType, relationType)) {
      failWithMessage(assertjErrorMessage, actual, relationType, actualRelationType);
    }

    // return the current assertion for method chaining
    return myself;
  }

  /**
   * Verifies that the actual VecPartRelation's xmlId is equal to the given one.
   * @param xmlId the given xmlId to compare the actual VecPartRelation's xmlId to.
   * @return this assertion object.
   * @throws AssertionError - if the actual VecPartRelation's xmlId is not equal to the given one.
   */
  public S hasXmlId(String xmlId) {
    // check that actual VecPartRelation we want to make assertions on is not null.
    isNotNull();

    // overrides the default error message with a more explicit one
    String assertjErrorMessage = "\nExpecting xmlId of:\n  <%s>\nto be:\n  <%s>\nbut was:\n  <%s>";

    // null safe check
    String actualXmlId = actual.getXmlId();
    if (!Objects.areEqual(actualXmlId, xmlId)) {
      failWithMessage(assertjErrorMessage, actual, xmlId, actualXmlId);
    }

    // return the current assertion for method chaining
    return myself;
  }

}