import java.util.Map;

public interface TRAII_25_X2 {
    /**
     * Measures the speed (time) of the containsKey() -operation of given
     * Map. Result is a typical time of the containsKey() operation in nanoseconds
     * in a case that the key is not found from the map.
     * Does not change the map (does not add or remove keys).
     *
     * @param M map under test
     * @return typical time of a containsKey() operation in nanoseconds
     */
    public long containsKeyTime(Map<Double, Double> M);

}