Bug 198917 set __parameterpage to false for required parameter will cause wrong Exception[0705]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/EngineTask.java
* @deprecated
	 * @return the emitter ID to be used to render this report. Could be null,
	 *         in which case the engine will choose one emitter that matches the
	 *         requested output format.
	 */
	public String getEmitterID( )
	{
		return this.emitterID;
	}
	public DataRequestSession getDataSession( )
	{
		return executionContext.getDataEngine( ).getDTESession( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api2.IEngineTask#addScriptableJavaObject(java.lang.String,
	 *      java.lang.Object)
	 */
	public void addScriptableJavaObject( String jsName, Object obj )
	{
		executionContext.registerBean( jsName, obj );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api2.IEngineTask#getID()
	 */
	public int getID( )
	{