parameters: (self, node, *args, **kwargs)
return_statement: return rv
docstring: As transformers may return lists in some places this method
          can be used to enforce a list as return value.
docstring_summary: As transformers may return lists in some places this method
          can be used to enforce a list as return value.
docstring_tokens: As transformers may return lists in some places this method can be used to enforce a list as return value .
function: def visit_list(self, node, *args, **kwargs):
          """As transformers may return lists in some places this method
          can be used to enforce a list as return value.
          """
          rv = self.visit(node, *args, **kwargs)
          if not isinstance(rv, list):
              rv = [rv]
          return rv
function_tokens: def visit_list ( self , node , * args , * * kwargs ) : rv = self . visit ( node , * args , * * kwargs ) if not isinstance ( rv , list ) : rv = [ rv ] return rv