PFNGLUNIFORMMATRIX2X3DVPROCDart typedef
        PFNGLUNIFORMMATRIX2X3DVPROCDart =
     void Function(int location, int count, int transpose, Pointer<Double>  value)
    
    
    
Implementation
typedef PFNGLUNIFORMMATRIX2X3DVPROCDart =
    void Function(
      int location,
      int count,
      int transpose,
      Pointer<Double> value,
    );