code: @Nonnull
    protected static final String getUnifiedItem (@Nonnull final String sItem)
    {
      final String ret = sItem.toLowerCase (Locale.US);
      return ret;
    }
docs: Get the unified (=lowercased) version of the passed String
  
  @param sItem
  The string to unify. May not be <code>null</code>.
  @return The unified version and never <code>null</code>.