src/vs/workbench/contrib/terminal/browser/terminalEditor.ts/TerminalEditor/createEditor
class TerminalEditor:	protected createEditor(parent: HTMLElement): void {
		this._editorInstanceElement = parent;
		this._overflowGuardElement = dom.$('.terminal-overflow-guard');
		this._editorInstanceElement.appendChild(this._overflowGuardElement);
		this._registerListeners();
	}