DeepExitException.php
An exception thrown by PHP_CodeSniffer when it wants to exit from somewhere not in the main runner.
Allows the runner to return an exit code instead of putting exit codes elsewhere in the source code.
Exit codes passed to this exception (as the $code parameter) MUST be one of the
predefined exit code constants per the PHP_CodeSniffer\Util\ExitCode class; or a bitmask sum of those.