PFNGLDEBUGMESSAGECALLBACKPROCDart typedef
        PFNGLDEBUGMESSAGECALLBACKPROCDart =
     void Function(Pointer<NativeFunction<GLDEBUGPROC> >  callback, Pointer<NativeType>  userParam)
    
    
    
Implementation
typedef PFNGLDEBUGMESSAGECALLBACKPROCDart =
    void Function(
      Pointer<NativeFunction<GLDEBUGPROC>> callback,
      Pointer<NativeType> userParam,
    );