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• 0.9.11
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• TreeNode.java

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/* Copyright (c) The m-m-m Team, Licensed under the Apache License, Version 2.0
 * http://www.apache.org/licenses/LICENSE-2.0 */
package io.github.mmm.entity.bean;

import io.github.mmm.bean.AbstractInterface;
import io.github.mmm.entity.property.link.LinkProperty;

/**
 * {@link EntityBean} that represents a node in a tree. The tree hierarchy is defined by the {@link #Parent() parent}
 * relation.
 *
 * @param  type of the tree-nodes.
 * @since 1.0.0
 */
@AbstractInterface
public abstract interface TreeNode> extends EntityBean {

  /**
   * @return the parent node or {@code null} if this is the root node.
   */
  LinkProperty Parent();

}