*  instant.doStuff == operation.doStuff.end
 * </pre>
 */
class Operations {
    private final InstantFactory instantFactory
    private final Object lock = new Object()
    private final Map<String, NamedOperation> operations = [:]
    private final OperationListener listener

    Operations(InstantFactory instantFactory, OperationListener listener) {
        this.listener = listener

Robert Griesemer <******@****.***> 1670366619 -0800

Andy Goldstein <******@****.***> 1673640017 -0500

Shubhendu <******@****.***> 1716419234 +0530

Laura Kassovic <******@****.***> 1701107622 -0800

// It is important not to add more atomic operations or other
// expensive operations to the fast path.
func coroswitch_m(gp *g) {
	c := gp.coroarg
	gp.coroarg = nil
	exit := gp.coroexit
	gp.coroexit = false
	mp := gp.m

	// Track and validate thread-lock interactions.
	//
	// The rules with thread-lock interactions are simple. When a coro goroutine is switched to,

Laura Kassovic <******@****.***> 1701107622 -0800

 * variety of sequences of the {@link Iterator#next}, {@link Iterator#hasNext} and {@link
 * Iterator#remove} operations. This utility takes the brute-force approach of trying <i>all</i>
 * possible sequences of these operations, up to a given number of steps. So, if the caller
 * specifies to use <i>n</i> steps, a total of <i>3^n</i> tests are actually performed.
 *

 * variety of sequences of the {@link Iterator#next}, {@link Iterator#hasNext} and {@link
 * Iterator#remove} operations. This utility takes the brute-force approach of trying <i>all</i>
 * possible sequences of these operations, up to a given number of steps. So, if the caller
 * specifies to use <i>n</i> steps, a total of <i>3^n</i> tests are actually performed.
 *

   * That is, each node's subtrees are traversed after the node itself is returned.
   *
   * <p>No guarantees are made about the behavior of the traversal when nodes change while iteration
   * is in progress or when the iterators generated by {@link #children} are advanced.
   *
   * @deprecated Use {@link com.google.common.graph.Traverser#depthFirstPreOrder} instead, which has
   *     the same behavior.
   */