PFNGLGETCOMPRESSEDTEXTUREIMAGEPROCDart typedef
        PFNGLGETCOMPRESSEDTEXTUREIMAGEPROCDart =
     void Function(int texture, int level, int bufSize, Pointer<NativeType>  pixels)
    
    
    
Implementation
typedef PFNGLGETCOMPRESSEDTEXTUREIMAGEPROCDart =
    void Function(
      int texture,
      int level,
      int bufSize,
      Pointer<NativeType> pixels,
    );