PFNGLTEXTURENORMALEXTPROCDart typedef
        PFNGLTEXTURENORMALEXTPROCDart =
     void Function(int mode)
    
    
    
Implementation
typedef PFNGLTEXTURENORMALEXTPROCDart = void Function(int mode);typedef PFNGLTEXTURENORMALEXTPROCDart = void Function(int mode);