code: @Nonnull
    public static String getAsDisplayName (@Nonnull final IPersonName aName)
    {
      if (isFirstNameFirst ())
        return getAsDisplayNameFirstNameFirst (aName);
      return getAsDisplayNameLastNameFirst (aName);
    }
docs: Get the name of the person consisting of first name, middle name and last
  name. Titles are not considered here. {@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