code: private String getDataType(String[] items) {
          for (String item : items) {
              if (XsdDatatypeEnum.ENTITIES.isDataType(item)) {
                  return item;
              }
          }
          return items[0];
      }
docs: Returns first data type which is a standard xsd data type. If no such data type found, then the first one will be
  returned.
  
  @param items
  @return