title: Expected ')' but when ')' is filled in it causes more errors
body: <p>there is an error and it expects a ')' but as soon as I add it, it causes lots of errors. Can you please help. If there are any other errors, please let me know</p>
  <pre><code>Widget _buildTodoItem(String title) {
      return Padding(
        padding: const EdgeInsets.fromLTRB(16.0, 16.0, 16.0, 0.0),
        child: GestureDetector(
          onTap: () =&gt;
              setState(() {
                _color = Colors.black;
                })); // here
          child: Card(
          child: Padding(
            padding: const EdgeInsets.all(8.0),
            child: Text(title),
            color: _color,
          ),
        ),
      );
    }
  </code></pre>
  <p><a href="https://i.stack.imgur.com/b0yU8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/b0yU8.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/YQCVg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YQCVg.png" alt="enter image description here" /></a></p>
  <p>If I use a comma instead of a semicolon:</p>
  <p><a href="https://i.stack.imgur.com/G4Gks.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/G4Gks.png" alt="enter image description here" /></a></p>