docs: Marks the google.cloud.essentialcontacts.v1.Contact.validation_state field as output_only

Google APIs · copybara-github · commit f78cd2f7943b · 2024-10-14T09:22:16.000-07:00
PiperOrigin-RevId: 685731240
diff --git a/google/cloud/essentialcontacts/v1/service.proto b/google/cloud/essentialcontacts/v1/service.proto
@@ -163,9 +163,10 @@ message Contact {
   // for a list of supported languages.
   string language_tag = 4 [(google.api.field_behavior) = REQUIRED];
 
-  // The validity of the contact. A contact is considered valid if it is the
-  // correct recipient for notifications for a particular resource.
-  ValidationState validation_state = 8;
+  // Output only. The validity of the contact. A contact is considered valid if
+  // it is the correct recipient for notifications for a particular resource.
+  ValidationState validation_state = 8
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The last time the validation_state was updated, either manually or
   // automatically. A contact is considered stale if its validation state was
