Hijacks the invocation of the Fiber and injects the string name of the calling function into the caller member before calling the Fiber's own .call().
String name of the function calling this CarryingFiber (via .call()).
A Throwable if the underlying Fiber threw one when called; null otherwise.
Hijacks the invocation of the Fiber and injects the string name of the calling function into the caller member before calling the Fiber's own .call().