Make an automaton complete, i.e., there is an outgoing transition from every state for every labels.
Precondition:
Postcondition:
See also:
import vcsn
z = vcsn.context('lal_char(abc), z')
a = z.expression('(<2>a<3>b)*').standard()
a
a.is_complete()
a.complete()
a.complete().is_complete()