System/Library/PrivateFrameworks/WorkflowUI.framework
WFBlockKeyCommand.h
@interface WFBlockKeyCommand : UIKeyCommand
@property (readonly, nonatomic) id /* block */ block;
+ (id)commandWithTitle:(id)a0 input:(id)a1 modifierFlags:(long long)a2 block:(id /* block */)a3;
- (void).cxx_destruct;
@end