Sets zero or more keyboard accelerators that will trigger the given action.
The first item in `accels` will be the primary accelerator, which may be displayed in the UI.
To remove all accelerators for an action, use an empty, zero-terminated array for `accels`.
For the `detailed_action_name`, see `g_action_parse_detailed_name()` and `g_action_print_detailed_name()`.
| this |
a `GtkApplication` |
| detailed_action_name |
a detailed action name, specifying an action and target to associate accelerators with |
| accels |
a list of accelerators in the format understood by [[email protected]_parse] |