org.testifyproject.google.common.base.Absent Maven / Gradle / Ivy
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/*
* Copyright (C) 2011 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in org.testifyproject.testifyprojectpliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org.testifyproject/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 org.testifyproject.testifyproject.google.org.testifyproject.testifyprojectmon.base;
import static org.testifyproject.testifyproject.google.org.testifyproject.testifyprojectmon.base.Preconditions.checkNotNull;
import org.testifyproject.testifyproject.google.org.testifyproject.testifyprojectmon.annotations.GwtCompatible;
import java.util.Collections;
import java.util.Set;
import javax.annotation.Nullable;
/**
* Implementation of an {@link Optional} not containing a reference.
*/
@GwtCompatible
final class Absent extends Optional {
static final Absent
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