OpenCvSharp.NativeMethods.core_FileNode_readRaw C# (CSharp) Method

        public static extern void core_FileNode_readRaw(
            IntPtr obj, [MarshalAs(UnmanagedType.LPStr)] string fmt, IntPtr vec, IntPtr len);
        [DllImport(DllExtern, CallingConvention = CallingConvention.Cdecl)]

 /// <summary>
 /// Reads node elements to the buffer with the specified format
 /// </summary>
 /// <param name="fmt"></param>
 /// <param name="vec"></param>
 /// <param name="len"></param>
 public void ReadRaw(string fmt, IntPtr vec, long len)
 {
     ThrowIfDisposed();
     if (fmt == null)
     {
         throw new ArgumentNullException(nameof(fmt));
     }
     NativeMethods.core_FileNode_readRaw(ptr, fmt, vec, new IntPtr(len));
 }