content: package com.fizzbuzz.android.dagger;
  
  /*
   * Copyright (C) 2007 The Guava Authors
   *
   * Licensed 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.
   */
  
  /*
   * Note: this file was copied from Guava to cut down significantly on the library size, since we're only
   * using a small subset of Guava.
   */
  public class Preconditions {
  
      /**
       * Ensures the truth of an expression involving the state of the calling
       * instance, but not involving any parameters to the calling method.
       *
       * @param expression a boolean expression
       * @param errorMessage the exception message to use if the check fails; will
       * be converted to a string using {@link String#valueOf(Object)}
       * @throws IllegalStateException if {@code expression} is false
       */
      public static void checkState(
              boolean expression, Object errorMessage) {
          if (!expression) {
              throw new IllegalStateException(String.valueOf(errorMessage));
          }
      }
  }
  