src/vs/editor/common/viewModel/viewModelImpl.ts/ViewModel/compositionType
class ViewModel:	public compositionType(text: string, replacePrevCharCnt: number, replaceNextCharCnt: number, positionDelta: number, source?: string | null | undefined): void {
		this._executeCursorEdit(eventsCollector => this._cursor.compositionType(eventsCollector, text, replacePrevCharCnt, replaceNextCharCnt, positionDelta, source));
	}