There are some options to `AnsibleModule` which you may be able to use to validate options passed in.  Look at existing modules for examples:  ```  mutually_exclusive  required_together  required_one_of  require_if  ```      Should `whitelist_file` and `blacklist_file` be `mutually_exclusive`  `mutually_exclusive=(('blacklist_file', 'whitelist_file'),),`