src/vs/workbench/api/common/extHostWebviewView.ts/ExtHostWebviewView/title
class ExtHostWebviewView:	public set title(value: string | undefined) {
		this.assertNotDisposed();
		if (this.#title !== value) {
			this.#title = value;
			this.#proxy.$setWebviewViewTitle(this.#handle, value);
		}
	}