PFNGLSECONDARYCOLORPOINTEREXTPROCDart typedef
        PFNGLSECONDARYCOLORPOINTEREXTPROCDart =
     void Function(int size, int type, int stride, Pointer<NativeType>  pointer)
    
    
    
Implementation
typedef PFNGLSECONDARYCOLORPOINTEREXTPROCDart =
    void Function(int size, int type, int stride, Pointer<NativeType> pointer);