parentPc  int32 // position of an instruction whose source position is the call site (offset from entry)
	startLine int32 // line number of start of function (func keyword/TEXT directive)
}

// An inlineUnwinder iterates over the stack of inlined calls at a PC by
// decoding the inline table. The last step of iteration is always the frame of
// the physical function, so there's always at least one frame.
//
// This is typically used as:
//

	}
	// There isn't much. Just map it and mark it as used immediately.
	sysMap(reservation, totalSize, p.sysStat)
	sysUsed(reservation, totalSize, totalSize)
	p.summaryMappedReady += totalSize

	// Iterate over the reservation and cut it up into slices.
	//
	// Maintain i as the byte offset from reservation where
	// the new slice should start.
	for l, shift := range levelShift {
		entries := 1 << (heapAddrBits - shift)

    return new Iterable<T>() {
      @Override
      public Iterator<T> iterator() {
        return new AbstractIterator<T>() {
          private final Iterator<? extends Optional<? extends T>> iterator =
              checkNotNull(optionals.iterator());

          @Override
          @CheckForNull
          protected T computeNext() {
            while (iterator.hasNext()) {

   * convenient.
   *
   * <p>By default, a {@code Builder} will generate maps that iterate over entries in the order they
   * were inserted into the builder, equivalently to {@code LinkedHashMap}. For example, in the
   * above example, {@code WORD_TO_INT.entrySet()} is guaranteed to iterate over the entries in the
   * order {@code "one"=1, "two"=2, "three"=3}, and {@code keySet()} and {@code values()} respect

            if (!isAuthenticationSupported) {
                throw new InvalidUserDataException(String.format("Authentication scheme %s is not supported by protocol '%s'",
                    authentication, schemes.iterator().next()));
            }

            if (credentials != null) {
                if (!((AuthenticationInternal) authentication).supports(credentials)) {

  /**
   * Returns a view of this range map as an unmodifiable {@code Map<Range<K>, V>}. Modifications to
   * this range map are guaranteed to read through to the returned {@code Map}.
   *
   * <p>The returned {@code Map} iterates over entries in ascending order of the bounds of the
   * {@code Range} entries.
   *
   * <p>It is guaranteed that no empty ranges will be in the returned {@code Map}.
   */
  Map<Range<K>, V> asMapOfRanges();

      Comparator<? super E> comparator, Iterator<? extends E> elements) {
    return new Builder<E>(comparator).addAll(elements).build();
  }

  /**
   * Returns an immutable sorted set containing the given elements sorted by the given {@code
   * Comparator}. When multiple elements are equivalent according to {@code compare()}, only the
   * first one specified is included. This method iterates over {@code elements} at most once.
   *

	default:
		offset = uint64(a.rand.Int63n(int64(rangeSize)))
	}
	iterator := ipIterator(a.offsetAddress, a.lastAddress, offset)
	ip, err := a.allocateFromRange(iterator, svc)
	if err == nil {
		return ip, nil
	}
	// check the lower range
	if a.rangeOffset != 0 {
		offset = uint64(a.rand.Intn(a.rangeOffset))
		iterator = ipIterator(a.firstAddress, a.offsetAddress.Prev(), offset)

    finish += block_size_;
  }
  size_t total_bytes_transferred = 0;
  // Now iterate through the blocks, reading them one at a time.
  for (size_t pos = start; pos < finish; pos += block_size_) {
    Key key = std::make_pair(filename, pos);
    // Look up the block, fetching and inserting it if necessary, and update the
    // LRU iterator for the key and block.
    std::shared_ptr<Block> block = Lookup(key);
    if (!block) {

      }
    }
  }

  /**
   * Returns an iterator over the elements contained in this collection, <i>in no particular
   * order</i>.
   *
   * <p>The iterator is <i>fail-fast</i>: If the MinMaxPriorityQueue is modified at any time after
   * the iterator is created, in any way except through the iterator's own remove method, the
   * iterator will generally throw a {@link ConcurrentModificationException}. Thus, in the face of