PFNGLGETMAPATTRIBPARAMETERIVNVPROCDart typedef
        PFNGLGETMAPATTRIBPARAMETERIVNVPROCDart =
     void Function(int target, int index, int pname, Pointer<Int32>  params)
    
    
    
Implementation
typedef PFNGLGETMAPATTRIBPARAMETERIVNVPROCDart =
    void Function(int target, int index, int pname, Pointer<Int32> params);