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/*
* Copyright (C) 2013 DroidDriver committers
*
* 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.android.droiddriver.finders;
/**
* Determines a true or false value for a given input.
*
* This is replicated from the open-source <a
* href="http://guava-libraries.googlecode.com">Guava libraries</a>.
* <p>
* Many apps use Guava. If a test apk also contains a copy of Guava, duplicated
* classes in app and test apks may cause error at run-time:
* "Class ref in pre-verified class resolved to unexpected implementation". To
* simplify the build and deployment set-up, DroidDriver copies the code of some
* Guava classes (often simplified) to this package such that it does not depend
* on Guava.
* </p>
*/
public interface Predicate<T> {
/**
* Returns the result of applying this predicate to {@code input}.
*/
boolean apply(T input);
/**
* {@inheritDoc}
*
* <p>
* It is recommended that this method return the description of this
* Predicate.
* </p>
*/
@Override
String toString();
}
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