@Nullable Commenter getLineCommenter(@NotNull PsiFile file,
                                       @NotNull Editor editor,
                                       @NotNull Language lineStartLanguage,
                                       @NotNull Language lineEndLanguage);
@Nullable Commenter getLineCommenter(@NotNull PsiFile file,
                                       @NotNull Editor editor,
                                       @NotNull Language lineStartLanguage,
                                       @NotNull Language lineEndLanguage)