PFNGLGETHISTOGRAMEXTPROCDart typedef
        PFNGLGETHISTOGRAMEXTPROCDart =
     void Function(int target, int reset, int format, int type, Pointer<NativeType>  values)
    
    
    
Implementation
typedef PFNGLGETHISTOGRAMEXTPROCDart =
    void Function(
      int target,
      int reset,
      int format,
      int type,
      Pointer<NativeType> values,
    );