@Override
	public void reportAmbiguity(Parser recognizer,
								DFA dfa,
								int startIndex,
								int stopIndex,
								boolean exact,
								BitSet ambigAlts,
								ATNConfigSet configs)
	{
	}
Provides an empty default implementation of {@link ANTLRErrorListener}. The
default implementation of each method does nothing, but can be overridden as
necessary.

@author Sam Harwell
runtime/Java/src/org/antlr/v4/runtime/BaseErrorListener.java