ResourceReference

Defines a proto annotation that describes a string field that refers to an API resource.

JSON representation 
{
  "type": string,
  "childType": string
}
Fields
type

string

The resource type that the annotated field references.

Example:

message Subscription {
  string topic = 2 [(google.api.resource_reference) = {
    type: "pubsub.googleapis.com/Topic"
  }];
}

Occasionally, a field may reference an arbitrary resource. In this case, APIs use the special value * in their resource reference.

Example:

message GetIamPolicyRequest {
  string resource = 2 [(google.api.resource_reference) = {
    type: "*"
  }];
}
childType

string

The resource type of a child collection that the annotated field references. This is useful for annotating the parent field that doesn't have a fixed resource type.

Example:

message ListLogEntriesRequest {
  string parent = 1 [(google.api.resource_reference) = {
    childType: "logging.googleapis.com/LogEntry"
  };
}