docs: @Nullable
    public static HC_Target getFromName (@Nonnull final String sName, @Nullable final HC_Target aDefault)
    {
      if (BLANK.getAttrValue ().equalsIgnoreCase (sName))
        return BLANK;
      if (SELF.getAttrValue ().equalsIgnoreCase (sName))
        return SELF;
      if (PARENT.getAttrValue ().equalsIgnoreCase (sName))
        return PARENT;
      if (TOP.getAttrValue ().equalsIgnoreCase (sName))
        return TOP;
      return aDefault;
    }