&ldquo;source.principal&rdquo; attribute.</p><p>If not set, any principal is allowed.</p></td><td>No</td></tr><tr id=Source-request_principals><td><code>requestPrincipals</code></td><td><code>string[]</code></td><td><p>Optional. A list of request identities (i.e. &ldquo;iss/sub&rdquo; claims), which
matches to the &ldquo;request.auth.principal&rdquo; attribute.</p><p>If not set, any request principal is allowed.</p></td><td>No</td></tr><tr id=Source-namespaces><td><code>namespaces</code></td><td><code>strin