@Override
		public void visitTerminal(TerminalNode node) {
			checksum.update(VISIT_TERMINAL);
			updateChecksum(checksum, node.getSymbol());
		}
This method is separate from {@link #parse1} so the first pass can be distinguished when analyzing
 profiler results.
tool-testsuite/test/org/antlr/v4/test/tool/TestPerformance.java