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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchlib.aggregation.hll;
/**
* A interface for unique count estimation algorithms. The goal of this interface is
* to aid unit testing of {@link HyperLogLogEstimator} users.
*
* @author bjorncs
*/
public interface UniqueCountEstimator<T> {
long estimateCount(T sketch);
}
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