usage.kt

// in activity 

class SettingInFingerActivity : AppCompatActivity() {
  
  private val click by lazy { ClickUtil(this.lifecycle) }
  
  // (생략)
  
  private fun initListener() {
    testButton.SetOnClickListener {
      click.run {
                Log.i("TAG", "다중 터치 방지")
      }
    }
  }
 
  // (생략)
  
}