PFNGLMAPTEXTURE2DINTELPROCDart typedef
        PFNGLMAPTEXTURE2DINTELPROCDart =
     Pointer<NativeType>  Function(int texture, int level, int access, Pointer<Int32>  stride, Pointer<Uint32>  layout)
    
    
    
Implementation
typedef PFNGLMAPTEXTURE2DINTELPROCDart =
    Pointer<NativeType> Function(
      int texture,
      int level,
      int access,
      Pointer<Int32> stride,
      Pointer<Uint32> layout,
    );