AscendingBitSetIndexToIndexMultiMap implements IndexToIndexMultiMap { @Override public String toString() { return "AscendingBitSetIndexToIndexMultiMap{" + "keysCount=" + keysCount + '}'; } private  AscendingBitSetIndexToIndexMultiMap(
            final int keysCount,
            @NotNull
            final Buffer elements,
            final int bitSetSizeInLongs); @NotNull static AscendingBitSetIndexToIndexMultiMap from(
            @NotNull
            final Buffer buf); @Override boolean get(
            @NotNull
            final BitSet dest,
            final int key); @Override boolean getFrom(
            @NotNull
            final BitSet dest,
            final int fromInclusive); @Override boolean getTo(
            @NotNull
            final BitSet dest,
            final int toExclusive); @Override boolean getBetween(
            @NotNull
            final BitSet dest,
            final int fromInclusive,
            final int toExclusive); @Override int getKeysCount(); @Override String toString(); @NotNull @Override Iterator<IntToIntArray> ascending(
            @NotNull
            final BitSet valueFilter); @NotNull @Override Iterator<IntToIntArray> descending(
            @NotNull
            final BitSet valueFilter);  }
@Test public void tostring() { assertNotNull(build().toString()); }