ios - Need to convert a swift snippet of code into Objective C -

i had use swift made code on: https://github.com/lourenco-marinho/actionbutton in objective-c project. couldn't convert following swift line objective-c:

actionbutton.action = { button in button.togglemenu() }

p.s. there no reference of variable button before or after code

let me show how things defined:

actionbutton is: var actionbutton: actionbutton! , actionbutton nsobject class

action defined in actionbutton class as: var action: actionbuttonaction?

and actionbuttonaction is: typealias actionbuttonaction = (actionbutton) -> void defined globally in actionbutton class

pretty messy? well, still want understand/convert above swift statement objective-c. clearance may follow link above.

that block in objective c

actionbutton.action = ^(actionbutton * button){     [button togglemenu]; };

also,typealise converted objective c

typedef void(^actionbuttonaction)(actionbutton * button);

Macro