writeHeaders()
				writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrPreconditionFailed), r.URL)
				return true
			}
		}
	}

	// x-amz-copy-source-if-match : Return the object only if its entity tag (ETag) is the
	// same as the one specified; otherwise return a 412 (precondition failed).
	ifMatchETagHeader := r.Header.Get(xhttp.AmzCopySourceIfMatch)
	if ifMatchETagHeader != "" {

            // Binary expressions with type RHS always use its operand.
            is KtBinaryExpressionWithTypeRHS ->
                parent.left == child

            // Is expressions always use their LHS.
            is KtIsExpression ->
                parent.leftHandSide == child

            // Unary expressions always use its operand.
            is KtUnaryExpression ->

   * orders its elements according to their {@linkplain Comparable natural ordering}.
   */
  public MonitorBasedPriorityBlockingQueue() {
    q = new PriorityQueue<E>();
  }

  /**
   * Creates a {@code MonitorBasedPriorityBlockingQueue} with the specified initial capacity that
   * orders its elements according to their {@linkplain Comparable natural ordering}.
   *

copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
   * Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    combination with its Contributor Version (or portions of such
    combination), to make, use, sell, offer for sale, have made, and/or
    otherwise dispose of: (1) Modifications made by that Contributor (or
    portions thereof); and (2) the combination of Modifications made by
    that Contributor with its Contributor Version (or portions of such
    combination).

 * href="https://github.com/ben-manes/caffeine/wiki">Caffeine</a>. Its API is designed to make it a
 * nearly drop-in replacement. It requires Java 8+, and is not available for Android or GWT/J2CL,
 * and may have <a href="https://github.com/ben-manes/caffeine/wiki/Guava">different (usually
 * better) behavior</a> when multiple threads attempt concurrent mutations. Its equivalent to {@code
 * CacheBuilder} is its <a

//
// # Single-part Upload
//
// In case of a basic single-part PUT operation - without server
// side encryption or object compression - the ETag of an object
// is its content MD5.
//
// # Multi-part Upload
//
// The ETag of an object does not correspond to its content MD5
// when the object is uploaded in multiple parts via the S3
// multipart API. Instead, S3 first computes a MD5 of each part:
//
//	 e1 := MD5(part-1)

      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the

  If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source.  For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code.  There are many ways you could offer source, and different

      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the