code: def copyData(self, source):
          
          super(BaseLayer, self).copyData(source)
          for name in source.keys():
              glyph = self.newGlyph(name)
              glyph.copyData(source[name])
docs: Copy data from **source** into this layer.
          Refer to :meth:`BaseLayer.copy` for a list
          of values that will be copied.