PFNGLCLIENTATTRIBDEFAULTEXTPROCDart typedef
        PFNGLCLIENTATTRIBDEFAULTEXTPROCDart =
     void Function(int mask)
    
    
    
Implementation
typedef PFNGLCLIENTATTRIBDEFAULTEXTPROCDart = void Function(int mask);typedef PFNGLCLIENTATTRIBDEFAULTEXTPROCDart = void Function(int mask);