<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def params(self) -> T.List[DocstringParam]: """Return parameters indicated in docstring."""

        return [
            DocstringParam.from_meta(meta)
            for meta in self.meta
            if meta.args[0]
            in {"param", "parameter", "arg", "argument", "key", "keyword"}
        ]