// the sweepLocker to be invalid, since sweeping is done.
	//
	// N.B. Below we might duplicate some work from gcSweep; this is
	// fine as all that work is idempotent within a GC cycle, and
	// we're still holding worldsema so a new cycle can't start.
	sl := sweep.active.begin()
	if !stwSwept && !sl.valid {
		throw("failed to set sweep barrier")

//
// A note on latency: for sufficiently small heaps (<10s of GiB) this function will take constant
// time, but may take time proportional to the size of the mapped heap beyond that.
//
// This function is idempotent.
//
// The heap lock must not be held over this operation, since it will briefly acquire
// the heap lock.
//
// Must be called on the system stack because it acquires the heap lock.
//
//go:systemstack

	// if the object being admitted is modified by other admission plugins after the initial webhook call.
	// Webhooks that specify this option *must* be idempotent, able to process objects they previously admitted.
	// Note:
	// * the number of additional invocations is not guaranteed to be exactly one.

	return statusPending(logger, "waiting for resource driver to provide information", "pod", klog.KObj(pod))
}

// Unreserve clears the ReservedFor field for all claims.
// It's idempotent, and does nothing if no state found for the given pod.
func (pl *dynamicResources) Unreserve(ctx context.Context, cs *framework.CycleState, pod *v1.Pod, nodeName string) {
	if !pl.enabled {
		return
	}

     * DeferredCloser#eventuallyClose(Object, Executor)}.
     *
     * <p>If any such calls specified {@link MoreExecutors#directExecutor()}, those objects will be
     * closed synchronously.
     *
     * <p>Idempotent: objects will be closed at most once.
     */
    public void closeAsync() {
      closingFuture.close();
    }
  }

  /**

     * DeferredCloser#eventuallyClose(Object, Executor)}.
     *
     * <p>If any such calls specified {@link MoreExecutors#directExecutor()}, those objects will be
     * closed synchronously.
     *
     * <p>Idempotent: objects will be closed at most once.
     */
    public void closeAsync() {
      closingFuture.close();
    }
  }

  /**

		// update its dependencies.
		return
	}

	if !pkg.isTest() {
		// Check whether we should add (or update the flags for) a test for pkg.
		// ld.pkgTest is idempotent and extra invocations are inexpensive,
		// so it's ok if we call it more than is strictly necessary.
		wantTest := false
		switch {
		case ld.allPatternIsRoot && MainModules.Contains(pkg.mod.Path):

	// fully read.
	//
	// After the Handler has returned, there is no guarantee
	// that the channel receives a value.
	//
	// If the protocol is HTTP/1.1 and CloseNotify is called while
	// processing an idempotent request (such as GET) while
	// HTTP/1.1 pipelining is in use, the arrival of a subsequent
	// pipelined request may cause a value to be sent on the
	// returned channel. In practice HTTP/1.1 pipelining is not

                throw new AssertionError("Should not have been invoked again");
            }
          }
        };

    assertTrue(iter.hasNext());
    assertEquals(0, (int) iter.next());

    // verify idempotence of hasNext()
    assertTrue(iter.hasNext());
    assertTrue(iter.hasNext());
    assertTrue(iter.hasNext());
    assertEquals(1, (int) iter.next());

    assertFalse(iter.hasNext());

package template

import (
	"strings"
)

// attrTypeMap[n] describes the value of the given attribute.
// If an attribute affects (or can mask) the encoding or interpretation of
// other content, or affects the contents, idempotency, or credentials of a
// network message, then the value in this map is contentTypeUnsafe.
// This map is derived from HTML5, specifically
// https://www.w3.org/TR/html5/Overview.html#attributes-1