static @NotNull TextAttributesKey getKey(Crumb c) {
      return
        c.isHovered()
        ? EditorColors.BREADCRUMBS_HOVERED
        : c.isSelected()
          ? EditorColors.BREADCRUMBS_CURRENT
          : c.isLight() && !(c instanceof NavigationCrumb)
            ? EditorColors.BREADCRUMBS_INACTIVE
            : EditorColors.BREADCRUMBS_DEFAULT;
    }
static @NotNull TextAttributesKey getKey(Crumb c)