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/**
 * Copyright (C) 2008 Google Inc.
 *
 * 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.inject.spi;

import com.google.inject.Binding;
import com.google.inject.Key;
import com.google.inject.Provider;

/**
 * A binding to a {@link Provider} that delegates to the binding for the provided type. This binding
 * is used whenever a {@code Provider} is injected (as opposed to injecting {@code T} directly).
 *
 * @author [email protected] (Jesse Wilson)
 * @since 2.0
 */
public interface ProviderBinding> extends Binding {

  /**
   * Returns the key whose binding is used to {@link Provider#get provide instances}. That binding
   * can be retrieved from an injector using {@link com.google.inject.Injector#getBinding(Key)
   * Injector.getBinding(providedKey)}
   */
  Key getProvidedKey();
}