gtk:font-dialog-choose-font-and-features-finish (dialog result)

dialog -- a gtk:font-dialog object
result -- a g:async-result object
desc -- a pango:font-description object
features -- a string for the font features
language -- a pango:language object

Finishes the the gtk:font-dialog-choose-font-and-features function call and returns the resulting font description.

Since 4.10