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
return;
		PropertyCommand cmd = new PropertyCommand( getModule( ), getElement( ) );
		cmd.removeItem( new CachedMemberRef( propDefn ), scriptLibHandle
				.getStructure( ) );
	}
	/**
	 * Removes all script libs.
	 * 
	 * @throws SemanticException
	 */
	public void dropAllScriptLibs( ) throws SemanticException
	{
		List scriptLibs = getFilteredStructureList( SCRIPTLIBS_PROP,
				ScriptLib.SCRIPTLIB_NAME_MEMBER );
		if ( scriptLibs == null )
			return;
		int count = scriptLibs.size( );
		for ( int i = count - 1; i >= 0; --i )
		{
			ScriptLibHandle scriptLibHandle = (ScriptLibHandle) scriptLibs
					.get( i );
			dropScriptLib( scriptLibHandle );
		}
	}
	/**
	 * Returns the iterator over all script libs. Each one is the instance of
	 * <code>ScriptLibHandle</code>.
	 * <p>
	 * 
	 * @return the iterator over script libs.