PFNGLENDVERTEXSHADEREXTPROCDart typedef
        PFNGLENDVERTEXSHADEREXTPROCDart =
     void Function()
    
    
    
Implementation
typedef PFNGLENDVERTEXSHADEREXTPROCDart = void Function();typedef PFNGLENDVERTEXSHADEREXTPROCDart = void Function();