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/**
 * Copyright (c) 2008, SnakeYAML
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package org.yaml.snakeyaml.nodes;

/**
 * Stores one key value pair used in a map.
 */
public final class NodeTuple {

  private final Node keyNode;
  private final Node valueNode;

  public NodeTuple(Node keyNode, Node valueNode) {
    if (keyNode == null || valueNode == null) {
      throw new NullPointerException("Nodes must be provided.");
    }
    this.keyNode = keyNode;
    this.valueNode = valueNode;
  }

  /**
   * Key node.
   *
   * @return the node used as key
   */
  public Node getKeyNode() {
    return keyNode;
  }

  /**
   * Value node.
   *
   * @return node used as value
   */
  public Node getValueNode() {
    return valueNode;
  }

  @Override
  public String toString() {
    return "";
  }
}