NSStringDrawingContext.castFromPointer constructor
      
      NSStringDrawingContext.castFromPointer(})
     
    
Constructs a NSStringDrawingContext that wraps the given raw object pointer.
Implementation
NSStringDrawingContext.castFromPointer(ffi.Pointer<objc.ObjCObject> other,
    {bool retain = false, bool release = false}) :
    this._(other, retain: retain, release: release);