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package edu.isi.nlp.collections;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;

/** Utilities related to {@link java.util.Set}s. */
public final class SetUtils {

  private SetUtils() {
    throw new UnsupportedOperationException();
  }

  /**
   * Returns all items found in the {@code left} iterable not found in the {@code right}. If the
   * iterables are not deterministic, this will reflect a single pass through each. This is not a
   * view.
   */
  public static  ImmutableSet differenceAsSets(Iterable left, Iterable right) {
    return Sets.difference(ImmutableSet.copyOf(left), ImmutableSet.copyOf(right)).immutableCopy();
  }
}