def retrieve_permission(pid: str, **filters):
    """

    DynamoDB Integration:
    ---

    if not all(required_fields):
        raise KeyError("NAMESPACE & ACTION fields are required")

    try:
        if pid == '__all__':

            return permission_table.query(
                    Key=Key('namespace').between('A', 'Z')
                    ProjectionExpression="namespace, action"
                )
            .

        return permission_table.get_item(Key={"pid": {"S": pid}})

    except Exception as e:
        print(e)

        return []
    """
    if pid == '__all__':
        pid = 'some-pid'
    return [{'pid': pid, 'namespace': 'test_namespace', 'action':
        'test_action', 'permission': 'test_namespace:test_action'}]
