src/vs/editor/browser/widget/codeEditorWidget.ts/CodeEditorWidget/_compositionType
class CodeEditorWidget:	private _compositionType(source: string | null | undefined, text: string, replacePrevCharCnt: number, replaceNextCharCnt: number, positionDelta: number): void {
		if (!this._modelData) {
			return;
		}
		this._modelData.viewModel.compositionType(text, replacePrevCharCnt, replaceNextCharCnt, positionDelta, source);
	}