def _gen_sign(cls, params, ret):
new_params = []
for stype, name, desc in params:
stype = TypeParser.get_python_stype(stype)
new_params.append((stype, name, desc))
ret_stype, _, ret_desc = ret
ret_stype = TypeParser.get_python_stype(ret_stype)
return super()._gen_sign(new_params, (ret_stype, _, ret_desc))
