title: how to pass the key? to _buildWidgets?
body: <p>Hi i am trying to pass following key to _buildEmailTF
  what is the best way to pass key to _buildEmailTF()?
  Thank you Please help me.</p>
  <p>final TextEditingController? controller;final bool? obsecureText final String hintText; final validator;</p>
  <pre><code>Widget _buildEmailTF() {
      return Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            'Email',
            style: kLabelStyle,
          ),
          SizedBox(
            height: 10.0,
          ),
          Container(
            alignment: Alignment.centerLeft,
            decoration: kBoxDecorationStyle,
            height: 60,
            child: TextField(
              keyboardType: TextInputType.emailAddress,
              style: TextStyle(color: Colors.white, fontFamily: 'OpenSans'),
              decoration: InputDecoration(
                  border: InputBorder.none,
                  errorBorder: OutlineInputBorder(
                    borderSide: const BorderSide(color: Colors.red),
                    borderRadius: const BorderRadius.all(
                      const Radius.circular(30.0),
                    ),
                  ),
                  focusedErrorBorder: const OutlineInputBorder(
                    borderSide: const BorderSide(color: Colors.red),
                    borderRadius: const BorderRadius.all(
                      const Radius.circular(30.0),
                    ),
                  ),
                  contentPadding: EdgeInsets.only(top: 14.0),
                  prefixIcon: Icon(
                    Icons.email,
                    color: Colors.white,
                  ),
                  hintText: 'Enter your Email',
                  hintStyle: kHintTextStyle),
            ),
          ),
        ],
      );
    }`
  </code></pre>