import java.util.Map.Entry;
import java.util.NavigableMap;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests operations on a NavigableMap. Can't be invoked directly; please
 * see {@code NavigableMapTestSuiteBuilder}.
 *
 * @author Jesse Wilson
 * @author Louis Wasserman
 */
@GwtIncompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.testing.DerivedComparable;
import com.google.common.collect.testing.NavigableMapTestSuiteBuilder;
import com.google.common.collect.testing.NavigableSetTestSuiteBuilder;
import com.google.common.collect.testing.SampleElements;
import com.google.common.collect.testing.TestSortedMapGenerator;

import com.google.common.collect.ImmutableSortedMap.Builder;
import com.google.common.collect.testing.ListTestSuiteBuilder;
import com.google.common.collect.testing.MapTestSuiteBuilder;
import com.google.common.collect.testing.NavigableMapTestSuiteBuilder;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;

      return createSubMap(map, firstExclusive, lastExclusive);
    }

    /**
     * Calls the smallest subMap overload that filters out the extreme values. This method is
     * overridden in NavigableMapTestSuiteBuilder.
     */
    SortedMap<K, V> createSubMap(SortedMap<K, V> map, K firstExclusive, K lastExclusive) {
      if (from == Bound.NO_BOUND && to == Bound.EXCLUSIVE) {
        return map.headMap(lastExclusive);