"Collection returned is unexpectedly modifiable";
  static final String ERROR_SELF_LOOP = "self-loops are not allowed";
  static final String ERROR_EDGE_NOT_IN_GRAPH =
      "Should not be allowed to pass an edge that is not an element of the graph.";
  static final String ERROR_ADDED_SELF_LOOP = "Should not be allowed to add a self-loop edge.";
  static final String ERROR_ADDED_PARALLEL_EDGE = "Should not be allowed to add a parallel edge.";

      "Collection returned is unexpectedly modifiable";
  static final String ERROR_SELF_LOOP = "self-loops are not allowed";
  static final String ERROR_EDGE_NOT_IN_GRAPH =
      "Should not be allowed to pass an edge that is not an element of the graph.";
  static final String ERROR_ADDED_SELF_LOOP = "Should not be allowed to add a self-loop edge.";
  static final String ERROR_ADDED_PARALLEL_EDGE = "Should not be allowed to add a parallel edge.";

	isReadLock := true
	return dm.lockBlocking(ctx, cancel, id, source, isReadLock, opts)
}

// lockBlocking will try to acquire either a read or a write lock
//
// The function will loop using a built-in timing randomized back-off
// algorithm until either the lock is acquired successfully or more
// time has elapsed than the timeout value.

        end = srcIndex + rDataLength;
/* Apparently readRDataWireFormat can return 0 if resultCode != 0 in
which case this will look indefinitely. Putting this else clause around
the loop might fix that. But I would need to see a capture to confirm.
if (resultCode != 0) {
    srcIndex += rDataLength;
} else {
*/
        for( addrIndex = 0; srcIndex < end; addrIndex++ ) {

        return false;
    }


    /**
     * @param request
     * @return
     */
    protected abstract int getResponseTimeout ( Request request );


    private void loop () {
        while ( this.thread == Thread.currentThread() ) {
            try {
                synchronized ( this.inLock ) {
                    Long key;
                    try {

        }
    }

    private String getMessage(String message, Throwable exception) {
        String fullMessage = (message != null) ? message : "";

        // To break out of possible endless loop when getCause returns "this"
        for (Throwable t = exception; t != null && t != t.getCause(); t = t.getCause()) {
            String exceptionMessage = t.getMessage();

    IllegalArgumentException e =
        assertThrows(IllegalArgumentException.class, () -> graphAsMutableGraph.putEdge(N1, N1));
    assertThat(e).hasMessageThat().contains(ERROR_SELF_LOOP);
  }

  @Test
  public void putEdge_allowsSelfLoops() {
    assume().that(graphIsMutable()).isTrue();
    assume().that(graph.allowsSelfLoops()).isTrue();

                    logger.debug(msg);
                }
                throw new SsoLoginException(e.getMessage() + " " + msg, e);
            }

            // context/auth loop not yet complete
            final boolean status = spnegoResponse.isStatusSet();
            if (logger.isDebugEnabled()) {
                logger.debug("isStatusSet: {}", status);
            }
            if (status) {

      return File.createTempFile(
          /* prefix= */ prefix,
          /* suffix= */ null,
          /* directory= */ null /* defaults to java.io.tmpdir */);
    }

    /** Maximum loop count when creating temp directories. */
    private static final int TEMP_DIR_ATTEMPTS = 10000;
  }

  private static final class ThrowingCreator extends TempFileCreator {
    private static final String MESSAGE =

	nonLoopBackIPs := localIP4.FuncMatch(func(ip string, matchString string) bool {
		return !strings.HasPrefix(ip, "127.")
	}, "")
	if len(nonLoopBackIPs) == 0 {
		t.Fatalf("No non-loop back IP address found for this host")
	}
	nonLoopBackIP := nonLoopBackIPs.ToSlice()[0]
	return nonLoopBackIP
}

func TestNewHTTPListener(t *testing.T) {
	testCases := []struct {