Moves forward to the next toggle (on or off) of the context class.
If no matching context class toggles are found, returns %FALSE, otherwise %TRUE.
Does not return toggles located at @iter, only toggles after @iter. Sets
@iter to the location of the toggle, or to the end of the buffer if no
toggle is found.
See the [class@Buffer] description for the list of default context classes.
Moves forward to the next toggle (on or off) of the context class.
If no matching context class toggles are found, returns %FALSE, otherwise %TRUE. Does not return toggles located at @iter, only toggles after @iter. Sets @iter to the location of the toggle, or to the end of the buffer if no toggle is found.
See the [class@Buffer] description for the list of default context classes.