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The Kogito public API which is backwards compatible between releases.

There is a newer version: 10.0.0

/*
 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
 *
 * 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.kie.api.definition.process;

import java.io.Serializable;

/**
 * A NodeContainer contains a set of Nodes
 * There are different types of NodeContainers and NodeContainers may be nested.
 */
public interface NodeContainer extends Serializable {

    /**
     * The Nodes of this NodeContainer.
     *
     * @return the nodes
     */
    Node[] getNodes();

    /**
     * The node in this NodeContainer with the given id.
     *
     * @return the node with the given id
     */
    Node getNode(long id);

}