PFNGLDRAWELEMENTSINSTANCEDARBPROCDart typedef
        PFNGLDRAWELEMENTSINSTANCEDARBPROCDart =
     void Function(int mode, int count, int type, Pointer<NativeType>  indices, int primcount)
    
    
    
Implementation
typedef PFNGLDRAWELEMENTSINSTANCEDARBPROCDart =
    void Function(
      int mode,
      int count,
      int type,
      Pointer<NativeType> indices,
      int primcount,
    );