Bug 153853 [Regression]The bound column names must be unique within the entire table.
Regression case Regression_136421(under org.eclipse.birt.report.tests.model) failed. Expected result: Model will avoid adding a duplicate bound column name within a table.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
}
		}
		return -1;
	}
	/**
	 * Finds a master page by name in this module and the included modules.
	 * 
	 * @param name
	 *            the name of the master page
	 * @return a handle to the master page, or <code>null</code> if the page
	 *         is not found
	 */
	public MasterPageHandle findMasterPage( String name )
	{
		DesignElement element = module.findPage( name );
		if ( element == null )
			return null;
		return (MasterPageHandle) element.getHandle( element.getRoot( ) );
	}
	/**
	 * Finds a parameter by name in this module and the included modules.
	 * 
	 * @param name
	 *            the name of the parameter
	 * @return a handle to the parameter, or <code>null</code> if the
	 *         parameter is not found
	 */
	public ParameterHandle findParameter( String name )
	{
		DesignElement element = module.findParameter( name );