Static IMKCandidatesSendServerKeyEventFirst 

pub unsafe static IMKCandidatesSendServerKeyEventFirst: &'static NSString

Available on crate feature IMKCandidates only.

Control when key events are sent to a candidate window.

Value is a NSNumber with a boolean value of NO (key events are sent to the candidate window first) or YES (key events are sent to the IMKInputController first). Note that this is only applicable when a candidate window is displayed. The default behavior is to send the key event to the candidate window first, and if it is not processed there, to send it on to the input controller.

See also Apple’s documentation