Provides a field description dict for swarm description.
    :return: (dict)

def createFieldDescription(self):
    """
    Provides a field description dict for swarm description.
    :return: (dict)
    """
    return {
      "fieldName": self.getName(),
      "fieldType": self._dataType,
      "minValue": self._min,
      "maxValue": self._max
    }