content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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.
   */
  
  package androidx.test.espresso.remote;
  
  /**
   * Transforms an Espresso remote message from and to a proto message. TODO: Once this API is stable
   * document on how and when these IFs need to be implemented
   */
  public interface EspressoRemoteMessage {
  
    /**
     * Transforms a class implementing this interface to a proto message.
     *
     * @param <M> This describes my type parameter M. M should either extend {@link
     *     com.google.protobuf.MessageLite} or enum message
     */
    interface To<M> {
      M toProto();
    }
  
    /**
     * Transforms a proto message of type M into a class of type T. M should either extend
     *
     * @param <T> Type parameter T represent the return type of the transformation, typically a
     *     ViewMatcher, ViewAction or ViewAssertion.
     * @param <M> Type parameter M should either extend {@link com.google.protobuf.MessageLite} or
     *     enum message
     */
    interface From<T, M> {
      T fromProto(M message);
    }
  }
  