function getCachedIntValue_(value) {
  return reflect.cache(IntCache_, value, function(val) {
    return new Long(val, val < 0 ? -1 : 0);
  });
}
Returns a cached long number representing the given (32-bit) integer value.
@param {number} value The 32-bit integer in question.
@return {!Long} The corresponding Long value.
@private