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Java idiomatic client for Google Cloud Datastore.

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/*
 * Copyright 2015 Google LLC
 *
 * 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 com.google.cloud.datastore;

import java.io.Serializable;

/** A common interface for Value marshallers. */
interface ValueMarshaller, B extends ValueBuilder>
    extends Serializable {

  B fromProto(com.google.datastore.v1.Value proto);

  com.google.datastore.v1.Value toProto(P value);

  int getProtoFieldId();
}