code: @Nonnull
    public static String getAsCompleteDisplayName (@Nonnull final IPersonName aName)
    {
      if (isFirstNameFirst ())
        return getAsCompleteDisplayNameFirstNameFirst (aName);
      return getAsCompleteDisplayNameLastNameFirst (aName);
    }
docs: Get the display name of the person consisting of titles, first name, middle
  name and last name. {@link #isFirstNameFirst()} is considered!
  
  @param aName
  The name to be converted. May not be <code>null</code>.
  @return The non-<code>null</code> display name