Returns a dictionary of information about this layer that an item \
        can use to sync with.
        
        :return     <dict>

def layerData(self):
        """
        Returns a dictionary of information about this layer that an item \
        can use to sync with.
        
        :return     <dict>
        """
        output = {}
        
        output['visible'] = self.isVisible()
        output['zValue']  = self.zValue()
        output['current'] = self.isCurrent()
        
        return output