A slightly smarter fake to be used for return value on missing stubs.
Shows a more descriptive error message to the user that mentions not
only a place where a fake was used but also why it was created
(i.e. which stub needs to be added).
Inspired by Java's Mockito
The hash code for this object.
A representation of the runtime type of the object.
Invoked when a non-existent method or property is accessed.
A string representation of this object.