return (ImmutableSortedSet<E>) RegularImmutableSortedSet.NATURAL_EMPTY_SET;
  }

  /** Returns an immutable sorted set containing a single element. */
  public static <E extends Comparable<? super E>> ImmutableSortedSet<E> of(E e1) {
    return new RegularImmutableSortedSet<>(ImmutableList.of(e1), Ordering.natural());
  }

  /**

func MaskFromMaskable(m Maskable) Mask {
	return Mask(m.Mask())
}

// Contains returns whether *all* flags in other is present in t.
func (t Mask) Contains(other Mask) bool {
	return t&other == other
}

// Overlaps returns whether *any* flags in t overlaps with other.
func (t Mask) Overlaps(other Mask) bool {
	return t&other != 0
}

// SingleType returns whether t has a single type set.

      total += read;
    }
    return total;
  }

  /**
   * Returns a new {@link ByteArrayDataInput} instance to read from the {@code bytes} array from the
   * beginning.
   */
  public static ByteArrayDataInput newDataInput(byte[] bytes) {
    return newDataInput(new ByteArrayInputStream(bytes));
  }

  /**

         * return value was <b>true</b>.
         *
         * @return the name of the last read property
         */
        public String getPropertyName() {
            return propertyName;
        }

        /**
         * Returns the value of the last read property. This method can be
         * called after <code>{@link #nextProperty()}</code> was invoked and
         * its return value was <b>true</b>.

	return r.bytesRead
}

// Data returns the bytes that were recorded.
func (r *RequestRecorder) Data() []byte {
	// If body logging is enabled then we return the actual body
	if r.LogBody {
		return r.buf.Bytes()
	}
	// ... otherwise we return <BLOB> placeholder
	return blobBody

          while (reader.hasNext()) {
            result += fromDer(reader)
          }
          return result
        }
      }

    return BasicDerAdapter(name, tagClass, tag, codec)
  }

  /** Returns an adapter that returns a set of values of this type. */
  fun asSetOf(): BasicDerAdapter<List<T>> {
    return asSequenceOf(
      name = "SET OF",
      tagClass = DerHeader.TAG_CLASS_UNIVERSAL,
      tag = 17L,

      if (files != null) {
        for (File f : files) {
          if (!delete(f)) {
            return false;
          }
        }
      }
    }

    if (!file.delete()) {
      logger.log(Level.WARNING, "couldn't delete file: {0}", new Object[] {file});
      return false;
    }

    return true;
  }

	Failed StatusType = "FAILED"

	// Replica - this is a replica.
	Replica StatusType = "REPLICA"
)

// String returns string representation of status
func (s StatusType) String() string {
	return string(s)
}

// Empty returns true if this status is not set
func (s StatusType) Empty() bool {
	return string(s) == ""

	err = unwrapAll(err)
	switch err {
	case nil:
		return checkPartSuccess
	case errFileNotFound, errFileVersionNotFound:
		return checkPartFileNotFound
	case errFileCorrupt:
		return checkPartFileCorrupt
	case errVolumeNotFound:
		return checkPartVolumeNotFound
	case errDiskNotFound:
		return checkPartDiskNotFound
	default:
		return checkPartUnknown
	}
}

          block()
          return -1L
        }
      },
      delayNanos,
    )
  }

  /** Returns a latch that reaches 0 when the queue is next idle. */
  fun idleLatch(): CountDownLatch {
    taskRunner.lock.withLock {
      // If the queue is already idle, that's easy.
      if (activeTask == null && futureTasks.isEmpty()) {
        return CountDownLatch(0)
      }