[Objective Sharpie] Error to generate the link with Mapbox iOS SDK

Hi,

I need to use the library of maps of the Mapbox, but the team only provides native iOS version. I tried using Objective Sharpie but I got an unexpected message.

Mapbox iOS SDK: https://mapbox.com/mapbox-ios-sdk/ https://github.com/mapbox/mapbox-ios-sdk

Error message:

Object reference not set to an instance of an object
System.NullReferenceException: Object reference not set to an instance of an
object
  at Sharpie.ObjC.CodeDomMassager.MassageMethod
(Sharpie.CodeDom.TypeDeclaration type, Sharpie.CodeDom.MethodDeclaration
method) [0x00000] in <filename unknown>:0 
  at Sharpie.ObjC.CodeDomMassager.MassageTypeMembers[MethodDeclaration]
(Sharpie.CodeDom.TypeDeclaration type, System.Action 2 massager) [0x00000] in
<filename unknown>:0 
  at Sharpie.ObjC.CodeDomMassager.MassageType (Sharpie.CodeDom.TypeDeclaration
type) [0x00000] in <filename unknown>:0 
  at Sharpie.ObjC.CodeDomMassager.MassageAll () [0x00000] in <filename
unknown>:0 
  at Sharpie.ObjC.Parser.Parse (System.IO.TextWriter sexpWriter,
System.Collections.Generic.List1 stderrLines) [0x00000] in <filename
unknown>:0 
  at Sharpie.Mac.MainWindowController+<GenerateBinding>c__AnonStorey3.<>m__B
(System.Object o) [0x00000] in <filename unknown>:0

I registered the BUG here: https://bugzilla.xamarin.com/show_bug.cgi?id=17947