Mapping(0x40080, 0x400ff, TYPE_DISALLOWED, ByteString.EMPTY),
    )
  }

  @Test fun mergeAdjacentDeltaMappedRangesWithMultipleDeltas() {
    assertThat(
      mergeAdjacentDeltaMappedRanges(
        mutableListOf(
          InlineDelta(1, 5),
          InlineDelta(2, 5),
          InlineDelta(3, 5),
          MappedRange.External(4, "a".encodeUtf8()),
        ),
      ),

      }
  }

  for (sectionList in result.values) {
    mergeAdjacentDeltaMappedRanges(sectionList)
  }

  return result.toMap()
}

/**
 * Modifies [ranges] to combine any adjacent [MappedRange.InlineDelta] of same size to single entry.
 * @returns same instance of [ranges] for convenience
 */
internal fun mergeAdjacentDeltaMappedRanges(ranges: MutableList<MappedRange>): MutableList<MappedRange> {
  var i = 0