code: def list_to_array(value):
          
          if value == None:
              return []
          elif type(value) in [list, tuple, set]:
              return list(value)
          elif type(value) in [str]:
              return value.split(',')
          else:
              return [value]
docs: Converts value into array object with empty array as default.
          Strings with comma-delimited values are split into array of strings.
  
          :param value: the list to convert.
  
          :return: array object or empty array when value is None