https://github.com/ansible/ansible/blob/1706d35fc476e36fcced25435c2f1c2401536376/test/lib/ansible_test/_util/controller/sanity/validate-modules/validate_modules/main.py#L414

When a module is in place to provide documentation for an action, it should be allowed to have a doc string.

Without a docstring users of pydocstring will need to suppress:

```
************* Module plugins.modules.git_away
plugins/modules/git_away.py:1:0: C0114: Missing module docstring (missing-module-docstring)
************* Module plugins.modules.git_here
plugins/modules/git_here.py:1:0: C0114: Missing module docstring (missing-module-docstring)
```

With a doc string the module is treated as a "real" module and fails sanity:

```
ansible-module-not-initialized: Execution of the module did not result in initialization of AnsibleModule
```

PEP257 suggests modules should have a docstring, and is generally considered a good practice to inform future developers of the purpose of the file and can be used for documentation generation as well.
)
                self._validate_argument_spec({'options': doc_suboptions}, spec_suboptions, kwargs,
                                             context=context + [arg], last_context_spec=data)
        for arg in args_from_argspec:
            if not str(arg).isidentifier():
                msg = "Argument '%s' in argument_spec" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " is not a valid python identifier"
                self.reporter.error(
                    path=self.object_path,
                    code='parameter-invalid',
                    msg=msg
                )
        if docs:
            args_from_docs = set()
            for arg, data in doc_options.items():
                args_from_docs.add(arg)
                args_from_docs.update(data.get('aliases', []))
            args_missing_from_docs = args_from_argspec.difference(args_from_docs)
            docs_missing_from_args = args_from_docs.difference(args_from_argspec | deprecated_args_from_argspec)
            for arg in args_missing_from_docs:
                if arg in provider_args:
                    
                    
                    continue
                msg = "Argument '%s'" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " is listed in the argument_spec, but not documented in the module documentation"