code: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   */
  
   package org.apache.skywalking.library.kubernetes;
  
  import org.apache.logging.log4j.util.Strings;
  import lombok.Builder;
  import lombok.Data;
  import lombok.RequiredArgsConstructor;
  import lombok.experimental.Accessors;
  
  @Data
  @Builder
  @RequiredArgsConstructor
  @Accessors(fluent = true)
  public class ObjectID {
      public static final ObjectID EMPTY = ObjectID.builder().build();
  
      private final String name;
      private final String namespace;
  
      @Override
      public String toString() {
          if (this == EMPTY) {
              return "";
          }
          if (Strings.isBlank(namespace)) {
              return name;
          }
          return name + "." + namespace;
      }
  }
  