c_g_application_add_main_option

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(GApplication* application, const(char)* longName, char shortName, GOptionFlags flags, GOptionArg arg, const(char)* description, const(char)* argDescription) c_g_application_add_main_option;

Meta