reactor-core/src/main/java/reactor/core/publisher/Operators.java
public static RuntimeException onRejectedExecution(Throwable original, Context context) {
		return onRejectedExecution(original, null, null, null, context);
	}
public static RuntimeException onRejectedExecution(Throwable original, Context context) {
		return onRejectedExecution(original, null, null, null, context);
	}
Return a wrapped {@link RejectedExecutionException} which can be thrown by the
operator. This exception denotes that an execution was rejected by a
{@link reactor.core.scheduler.Scheduler}, notably when it was already disposed.
<p>
Wrapping is done by calling both {@link Exceptions#bubble(Throwable)} and
{@link #onOperatorError(Subscription, Throwable, Object, Context)}.

@param original the original execution error
@param context a context that might hold a local error consumer