binding (kotlin)

package com.example.firstapplication

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.TextView
import androidx.databinding.DataBindingUtil
import com.example.firstapplication.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {

    // this part
    private var something : ActivityMainBinding? = null

    private var test : TextView? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // this part
        something = DataBindingUtil.setContentView(this, R.layout.activity_main)
        something?.nameText?.text = "Fahad Pathan"
        something?.email?.text = "fahadpathan56@gmail.com"
    }
}