parameters: (self, value)
docstring: Remove an element.  Do not raise an exception if absent.
docstring_summary: Remove an element.  Do not raise an exception if absent.
docstring_tokens: Remove an element . Do not raise an exception if absent .
function: def discard(self, value):
          """Remove an element.  Do not raise an exception if absent."""
          raise NotImplementedError
function_tokens: def discard ( self , value ) : raise NotImplementedError