PFNGLIMPORTSEMAPHOREWIN32NAMEEXTPROCDart typedef
        PFNGLIMPORTSEMAPHOREWIN32NAMEEXTPROCDart =
     void Function(int semaphore, int handleType, Pointer<NativeType>  name)
    
    
    
Implementation
typedef PFNGLIMPORTSEMAPHOREWIN32NAMEEXTPROCDart =
    void Function(int semaphore, int handleType, Pointer<NativeType> name);