Description:
Optional. Filters the results by the specified rule. For the exact syntax of this field, please consult the [AIP-160](https://google.aip.dev/160) standard. Currently, since the only fields in the ResourcePolicy resource are the scalar fields `enforcement_mode` and `target_resource`, this method does not support the traversal operator (`.`) or the has operator (`:`). Here are some examples of valid filters: * `enforcement_mode = ENFORCED` * `target_resource = "//oauth2.googleapis.com/projects/12345/oauthClients/"` * `enforcement_mode = ENFORCED AND target_resource = "//oauth2.googleapis.com/projects/12345/oauthClients/"`