Bug 155509 ModuleHandle findResource method does not support .properties files
There is no fileType for .properties files in IResourceLocator
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
setStringProperty( UNITS_PROP, units );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.DesignElementHandle#getElement()
	 */
	public DesignElement getElement( )
	{
		return module;
	}
	/**
	 * Finds the handle to an element by a given element ID. Returns
	 * <code>null</code> if the ID is not valid, or if this session does not
	 * use IDs.
	 * 
	 * @param id
	 *            ID of the element to find
	 * @return A handle to the element, or <code>null</code> if the element
	 *         was not found or this session does not use IDs.
	 */
	public DesignElementHandle getElementByID( long id )
	{
		DesignElement element = module.getElementByID( id );
		if ( element == null )
			return null;
		return element.getHandle( module );
	}
	/**
	 * Returns a list containing errors during parsing the design file.