private void _getFileInput()
        {
            var path = _fileInput.GetFileInput();

            var extension = Path.GetExtension(path);

            // Get input reader based on extension of given path
            InputReaderFactory inputReaderFactory = new InputReaderFactory();
            IInputReader       inputReader        = inputReaderFactory.GetInputReader(extension);

            // Get node and edge list from input reader
            inputReader.Read(path);
            _nodes = inputReader.CreateNodeList();
            _edges = inputReader.CreateEdgeList();
        }