title: Add some space between action bar and title in Flutter
body: <p>How can I add some space between action bar and title <code>textField</code> ?</p>
  
  <p><strong>AddWorkRequest</strong></p>
  
  <pre><code>class AddWorkRequest extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return Container(
        decoration: BoxDecoration(
            color: Colors.white
        ),
        child: AddWorkRequestForm(),
      );
    }
  }
  </code></pre>
  
  <p><strong>AddWorkRequestForm</strong></p>
  
  <pre><code>class AddWorkRequestForm extends StatefulWidget {
    @override
    State&lt;StatefulWidget&gt; createState() {
      // TODO: implement createState
      return new _AddWorkRequestPage();
    }
  }
  
  class _AddWorkRequestPage extends State&lt;AddWorkRequestForm&gt; {
    @override
    Widget build(BuildContext context) {
      return new Scaffold(
          appBar: new AppBar(
            title: new Text("Add Work Request"),
          ),
          body: new Column(
            children: &lt;Widget&gt;[
              titleField(),
              Container(margin: EdgeInsets.only(top: 10.0, bottom: 5.0)),
              detailDescriptionField(),
              Container(margin: EdgeInsets.only(top: 10.0, bottom: 5.0)),
              locationField(),
              Container(margin: EdgeInsets.only(top: 10.0, bottom: 5.0)),
              Align(
                alignment: Alignment.centerLeft,
                child: Container(
                  child: Text(
                    'Photos',
                    style: new TextStyle(fontSize: 20.0, fontFamily: 'Roboto'),
                  ),
                ),
              )
            ],
          ));
    }
  
    Widget detailDescriptionField() {
      return StreamBuilder(builder: (context, snapshot) {
        return TextFormField(
            decoration: InputDecoration(
              labelText: StringConstant.detailDescription,
              border: OutlineInputBorder(
                  borderRadius: new BorderRadius.circular(10.0),
                  borderSide: BorderSide()),
            ));
      });
    }
  
    Widget locationField() {
      return StreamBuilder(builder: (context, snapshot) {
        return TextFormField(
            decoration: InputDecoration(
              labelText: StringConstant.location,
              border: OutlineInputBorder(
                  borderRadius: new BorderRadius.circular(10.0),
                  borderSide: BorderSide()),
            ));
      });
    }
  
    Widget titleField() {
      return StreamBuilder(builder: (context, snapshot) {
        return TextFormField(
            decoration: InputDecoration(
              labelText: StringConstant.title,
              border: OutlineInputBorder(
                  borderRadius: new BorderRadius.circular(10.0),
                  borderSide: BorderSide()),
            ));
      });
    }
  }
  </code></pre>