rpc UpdateCase(UpdateCaseRequest) returns (Case) {
    option (google.api.http) = {
      patch: "/v2beta/{case.name=projects/*/cases/*}"
      body: "case"
    };
    option (google.api.method_signature) = "case,update_mask";
  }

message Case {
  option (google.api.resource) = {
    type: "cloudsupport.googleapis.com/Case"
    pattern: "projects/{project}/cases/{case}"
  };
}

message UpdateCaseRequest {
  Case case = 1 [(google.api.field_behavior) = REQUIRED];
  google.protobuf.FieldMask update_mask = 2;
}