parameters: (self, param)
docstring: Returns the metavar default for this param if it provides one.
docstring_summary: Returns the metavar default for this param if it provides one.
docstring_tokens: Returns the metavar default for this param if it provides one .
function: def get_metavar(self, param):
          """Returns the metavar default for this param if it provides one."""
function_tokens: def get_metavar ( self , param ) :