NOTE: This method is now obsolete.
De-activated since version 126.96.36.199 as it cannot be overidden.
@deprecated as of 2.7.2. This method calls System.exit() and writes directly to stderr, which is usually not appropriate when a parser is embedded into a larger application. Since the method is
static, it cannot be overridden to avoid these problems. ANTLR no longer uses this method internally or in generated code.