ANTLR warning "Multiple token rules can match input such as "Xa, Xi, Xe ", Tokens Xi, Xe were disabled for that input"

Have you come across the following warning when you build ANTLR grammer files?

This is due to a failure in NFA > DFA conversion. Creating DFA for the parser is not performed as expected. For NFA conversion, the default time-out value is set to 1000. You need to increase this value to fix the above issue using the following statement when you are building the grammer.

-Xconversiontimeout t (t standas for time-out value)