Bug 183918 get relative file path of linkage library
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/LibraryHandle.java
}
	/**
	 * Returns the host handle which includes the library.
	 * 
	 * @return the host handle which include this library.
	 */
	public ModuleHandle getHostHandle( )
	{
		Module host = ( (Library) getElement( ) ).getHost( );
		if ( host == null )
			return null;
		return (ModuleHandle) host.getHandle( getModule( ) );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.DesignElementHandle#getElement()
	 */
	public DesignElement getElement( )
	{
		return module;
	}
	/**
	 * Returns the library namespace, which identifies one library unqiuely in
	 * one design file.
	 * 
	 * @return the library namespace
	 */
	public String getNamespace( )
	{