code: def moveBy(self, value):
          
          value = normalizers.normalizeTransformationOffset(value)
          self._moveBy(value)
docs: Move the object.
  
              >>> obj.transformBy((10, 0))
  
          **value** must be an iterable containing two
          :ref:`type-int-float` values defining the x and y
          values to move the object by.