PFNGLGETIMAGEHANDLENVPROCDart typedef
        PFNGLGETIMAGEHANDLENVPROCDart =
     int Function(int texture, int level, int layered, int layer, int format)
    
    
    
Implementation
typedef PFNGLGETIMAGEHANDLENVPROCDart =
    int Function(int texture, int level, int layered, int layer, int format);