GLib.OptionContext.prototype.set_summary
function set_summary(summary: String): void { // Gjs wrapper for g_option_context_set_summary() }
Adds a string to be displayed in `--help` output before the list of options. This is typically a summary of the program functionality.
Note that the summary is translated (see GLib.OptionContext.prototype.set_translate_func and GLib.OptionContext.prototype.set_translation_domain).
Since 2.12
- summary
a string to be shown in `--help` output before the list of options, or null