def build_opt(self, m, initial_state, c):
		s = m.new_state()
		initial_state.link_to(s)
		initial_state.add_transition(c, s)
		return s
Given a state |s| of machine |m|, return a new state
dataset/ETHPy150Open probcomp/bayeslite/external/plex/dist/Plex/Regexps.py/RE.build_opt