set_copyright
Description:
Sets the copyright information for this.
This should be a short string of one or two lines, for example: `© 2022 Example`.
The copyright information will be displayed on the Legal page, before the application license.
[method@AboutWindow.add_legal_section] can be used to add copyright information for the application dependencies or other components.
Parameters:
| this |
an about window |
| copyright |
the copyright information |