[Transition exception] To state same as From state if transition is not defined on defined event

[codeShaurya]

I started using squirrel in my project last month, and I noticed a weird behaviour. I understood the behaviour but still want to know its root cause.

Defined Transition in State Machine:

@transit(from = "a", to = "b", on = "test", callMethod = "moveShipment"),
@transit(from = "a", to = "c", on = "test", callMethod = "moveShipment"),

When I called state machine with intinal state "b" and event was "test" then it showed me an error like this:

Error while processing requestorg.squirrelframework.foundation.exception.TransitionException: 00010017 : Transition from 'b' to 'b' on 'test' with context 

I want to know how did it pick the "To" State, which is the same as "From" state; event transition in the state machine is not defined. Here I am firing the same event.