PFNGLMULTITEXBUFFEREXTPROCDart typedef
        PFNGLMULTITEXBUFFEREXTPROCDart =
     void Function(int texunit, int target, int internalformat, int buffer)
    
    
    
Implementation
typedef PFNGLMULTITEXBUFFEREXTPROCDart =
    void Function(int texunit, int target, int internalformat, int buffer);