<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def has_transition(self, state):
 """ Lookup if any transition exists from current model state using current method """

        if state in self.transitions:
            return True

        if '*' in self.transitions:
            return True

        if '+' in self.transitions and self.transitions['+'].target != state:
            return True

        return False