_[Original issue](https://code.google.com/p/guava-libraries/issues/detail?id=1813) created by **j...@nwsnet.de** on 2014-07-23 at 03:21 PM_

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I didn't find information on the immutability of `Range`&nbsp;instances in the JavaDocs [1]; only the wiki page [2] explicitly states it.

I suggest documenting the immutability directly in the JavaDocs, and thus in the implementation itself.

[1] https://google.github.io/guava/apidocs/com/google/common/collect/Range.html
[2] https://code.google.com/p/guava-libraries/wiki/RangesExplained

(Slightly unrelated: The comments disappeared from the wiki, especially helpful ones which I remembered to be on the page on ranges are gone. I'd like to state that I don't welcome that change.)

/*
 * Copyright (C) 2008 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.
 */
package com.google.common.collect;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.annotations.GwtCompatible;
import com.google.common.base.Equivalence;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import java.io.Serializable;
import java.util.Comparator;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.SortedSet;
import org.checkerframework.checker.nullness.compatqual.NullableDecl;