Removing Extra Space Appbar In Flutter

Removing Extra Space Appbar In Flutter
new AppBar(<br>
            titleSpacing: 0.0,<br>
            automaticallyImplyLeading: false, // Don't show the leading button<br>
            title: Row(<br>
              mainAxisAlignment: MainAxisAlignment.start,<br>
              crossAxisAlignment: CrossAxisAlignment.center,<br>
              children: [<br>
                IconButton(<br>
                  onPressed: () => Navigator.pop(context),<br>
                  icon: Icon(Icons.arrow_back, color: Colors.white),<br>
                ),<br>
                // Your widgets here<br>
              ],<br>
            )),