*/
  val isOpen: Boolean
    get() {
      withLock {
        if (errorCode != null) {
          return false
        }
        if ((source.finished || source.closed) &&
          (sink.finished || sink.closed) &&
          hasResponseHeaders
        ) {
          return false
        }
        return true
      }
    }

  /** Returns true if this stream was created by this peer. */

    private fun uppercase(original: Source): Source {
      return object : ForwardingSource(original) {
        override fun read(
          sink: Buffer,
          byteCount: Long,
        ): Long {
          val mixedCase = Buffer()
          val count = original.read(mixedCase, byteCount)
          sink.writeUtf8(mixedCase.readUtf8().uppercase())
          return count
        }
      }
    }
  }

   *
   * @param stripes the minimum number of stripes (locks) required
   * @return a new {@code Striped<ReadWriteLock>}
   */
  public static Striped<ReadWriteLock> lazyWeakReadWriteLock(int stripes) {
    return lazyWeakCustom(stripes, WeakSafeReadWriteLock::new);
  }

  /**
   * ReadWriteLock implementation whose read and write locks retain a reference back to this lock.

a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that...

                    return mirror;
                }
            }

            for (Mirror mirror : mirrors) {
                if (matchPattern(repository, mirror.getMirrorOf()) && matchesLayout(repository, mirror)) {
                    return mirror;
                }
            }
        }

        return null;
    }

    /**

    if (iterable instanceof List) {
      List<E> list = (List<E>) iterable;
      if (list.isEmpty()) {
        return Optional.absent();
      }
      return Optional.of(list.get(list.size() - 1));
    }
    Iterator<E> iterator = iterable.iterator();
    if (!iterator.hasNext()) {
      return Optional.absent();
    }

    /*

        return set2.containsAll(set1);
      }

      @Override
      public boolean contains(@Nullable Object element) {
        return set1.contains(element) && !set2.contains(element);
      }

      @Override
      int minSize() {
        return max(minSize(set1) - maxSize(set2), 0);
      }

      @Override
      int maxSize() {
        return maxSize(set1);
      }

              return@withLock true
            } else {
              intervalPingsSent++
              return@withLock false
            }
          }
        if (failDueToMissingPong) {
          failConnection(null)
          return@schedule -1L
        } else {
          writePing(false, INTERVAL_PING, 0)
          return@schedule pingIntervalNanos
        }
      }

			apiErr.Description = fmt.Sprintf("The authorization header is malformed; the region is wrong; expecting '%s'.", region)
			return apiErr
		}
	}
	return apiErr
}

func (e errorCodeMap) ToAPIErr(errCode APIErrorCode) APIError {
	return e.ToAPIErrWithErr(errCode, nil)
}

// error code to APIError structure, these fields carry respective
// descriptions for all the error responses.

      if (c.isEmpty()) {
        return defaultValue;
      } else if (iterable instanceof List) {
        return getLastInNonemptyList((List<? extends T>) iterable);
      } else if (iterable instanceof SortedSet) {
        return ((SortedSet<? extends T>) iterable).last();
      }
    }

    return Iterators.getLast(iterable.iterator(), defaultValue);
  }