6. The apparatus of claim 4 , wherein the transition-graph test model further comprises: a user-customizable transition interface that returns a test event associated with a transition object; a user-customizable transition interface that performs a transition for a transition object; and a user-customizable transition interface that prints details of a transition object.
6. The apparatus of claim 4 , wherein the transition-graph test model further comprises: a user-customizable transition interface that returns a test event associated with a transition object; a user-customizable transition interface that performs a transition for a transition object; and a user-customizable transition interface that prints details of a transition object. 7. The apparatus of claim 6 , wherein the transition graph test model further comprises: a user-customizable parsing interface that checks if there is a recognized and valid transition in an argument list at a specified index and if there is one, advances the index to an end of a transition description, and returns the transition object and otherwise keeps the index in place and returns null.