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.
msg += " must contain strings in the lists or tuples; found value %r" % (term, )
                    self.reporter.error(
                        path=self.object_path,
                        code=name + '-type',
                        msg=msg,
                    )
                    bad_term = True
            if bad_term:
                continue
            if len(set(check)) != len(check):
                msg = name
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " has repeated terms"
                self.reporter.error(
                    path=self.object_path,
                    code=name + '-collision',
                    msg=msg,
                )
            if not set(check) <= set(spec):
                msg = name
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " contains terms which are not part of argument_spec: %s" % ", ".join(sorted(set(check).difference(set(spec))))
                self.reporter.error(
                    path=self.object_path,
                    code=name + '-unknown',
                    msg=msg,
                )
    def _validate_required_if(self, terms, spec, context, module):