code: @Deprecated
      public static MeasureUnit resolveUnitPerUnit(MeasureUnit unit, MeasureUnit perUnit) {
          return unitPerUnitToSingleUnit.get(Pair.of(unit, perUnit));
      }
docs: For ICU use only.
  @deprecated This API is ICU internal only.
  @hide original deprecated declaration
  @hide draft / provisional / internal are hidden on Android