# Displayed host name
	#
	# Specify this option if you need a qualified hostname to use within your handlers
	# and `app_host` requires something else like an IP to bind.
	# Really useful if the popcorn app runs behind a proxy.
	#
	# Default is `"{app_host}:{app_port}"`
	var opt_hostname = new OptionString("Displayed host name", "--hostname")