code: def find_route_functions_taint_args(self):
          
          for definition in _get_func_nodes():
              if self.is_route_function(definition.node):
                  yield self.get_func_cfg_with_tainted_args(definition)
docs: Find all route functions and taint all of their arguments.
  
          Yields:
              CFG of each route function, with args marked as tainted.