How do you get the Terrain Size (C#)?

Hello! I tried getting the Terrain Size, according to the Manual, but it didn’t work. What did I do wrong?

Error: Expression denotes a “type”, where a “variable” was expected.

	void Start () {
		GameObject GameTerrain = GameObject.Find("Terrain");
		Vector3 Dimensions;
		Dimensions = GameTerrain.GetComponent(Terrain).TerrainData.size;

You can use the type in triangle brackets like so:

Vector3 mySize = GameObject.Find("Terrain").GetComponent<Terrain>().terrainData.size;

The terrain docs:

say that terrain data is called terrainData (lowercase t).