parameters: (self, dc)
docstring: This method should be overridden when sub-classed.
  
          :param `dc`: an instance of :class:`DC`.
docstring_summary: This method should be overridden when sub-classed.
docstring_tokens: This method should be overridden when sub - classed .
function: def Draw(self, dc):
          """
          This method should be overridden when sub-classed.
  
          :param `dc`: an instance of :class:`DC`.        
          """
          
          pass
function_tokens: def Draw ( self , dc ) : pass