PFNGLCOMPRESSEDTEXTURESUBIMAGE1DPROCDart typedef
        PFNGLCOMPRESSEDTEXTURESUBIMAGE1DPROCDart =
     void Function(int texture, int level, int xoffset, int width, int format, int imageSize, Pointer<NativeType>  data)
    
    
    
Implementation
typedef PFNGLCOMPRESSEDTEXTURESUBIMAGE1DPROCDart =
    void Function(
      int texture,
      int level,
      int xoffset,
      int width,
      int format,
      int imageSize,
      Pointer<NativeType> data,
    );