Bug 136279 Structure and table datatypes should be hidden.
Description: Structure and table datatype should be hidden. Steps to reproduce: In table data binding, I saw structure and table two datatypes. They are not supported now, so they should be removed.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ReportDesignHandle.java
return getStringProperty( AFTER_RENDER_METHOD );
	}
	/**
	 * Returns the base directory to use when computing relative links from this
	 * report. Especially used for searching images, library and so.
	 * 
	 * @return the base directory
	 */
	public String getBase( )
	{
		return module.getStringProperty( module, BASE_PROP );
	}
	/**
	 * Returns the script called just before closing the report document file in
	 * the Factory.
	 * 
	 * @return the script
	 * @deprecated
	 */
	public String getBeforeCloseDoc( )
	{
		return ""; 
	}
	/**
	 * Returns the script called at the start of the Factory after the
	 * initialize( ) method and before opening the report document (if any).
	 * 
	 * @return the script
	 */
	public String getBeforeFactory( )