what to include if using text mesh pro

using UnityEngine
// Include the name space for TextMesh Pro
using TMPro;
public class MyClass : MonoBehaviour
{
  private TMP_Text m_TextComponent;

  private void Awake()
      {
          // Get a reference to the text component.
          // Since we are using the base class type <TMP_Text> this component could be either a <TextMeshPro> or <TextMeshProUGUI> component.
          m_TextComponent = GetComponent<TMP_Text>();

          // Change the text on the text component.
          m_TextComponent.text = "Some new line of text.";
      }
}