content: /**
   * 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
   * <p/>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p/>
   * 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.bigtop.itest;
  
  import java.lang.annotation.Documented;
  
  /**
   * Specifies a parameter to be passed into a test via an environment variable.
   * The parameter is a String.
   * By default, the parameter is required. If it is required and a non-null value
   * cannot be found for it, an error may be thrown.
   */
  @Documented
  public @interface Variable {
    String name();
  
    boolean required() default true;
  }
  