ShutdownSignal
System signals which shut down a process
enum ShutdownSignal {
SIGHUP: 'SIGHUP'
SIGINT: 'SIGINT'
SIGQUIT: 'SIGQUIT'
SIGILL: 'SIGILL'
SIGTRAP: 'SIGTRAP'
SIGABRT: 'SIGABRT'
SIGBUS: 'SIGBUS'
SIGFPE: 'SIGFPE'
SIGSEGV: 'SIGSEGV'
SIGUSR2: 'SIGUSR2'
SIGTERM: 'SIGTERM'
}