Bug 143898 [smoke][regression]Chart cannot be extended from library file
Description: Chart cannot be extended from library file Step to reproduce: 1. New a library and insert chart, publish it. 2. New a report, drag data source, dataset and chart to Layout from library 3. Save the report. Result: GUIException: caused by java.lang.reflect. invocation targetexception
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/validators/ExtensionValidator.java
/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/
package org.eclipse.birt.report.model.api.validators;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.birt.report.model.api.extension.ExtendedElementException;
import org.eclipse.birt.report.model.core.DesignElement;
import org.eclipse.birt.report.model.core.Module;
import org.eclipse.birt.report.model.elements.ExtendedItem;
import org.eclipse.birt.report.model.validators.AbstractElementValidator;
/**
 * Validates the extension is valid, which is provided by
 * <code>IReportItem</code>.
 *