text: # -*- coding: utf-8 -*-
  
  """ Collection of utility methods  """
  
  from koji_wrapper.exceptions import UnsupportedTypeException
  
  
  def convert_to_list(value):
      """
      :param value: a value to convert into a list.  Currently, this must be one
      of [string, list, None]
      :returns: a flat list version of the value passed in
      """
  
      supported = (str, list)
      if isinstance(value, supported) is False and value is not None:
          raise UnsupportedTypeException
  
      if isinstance(value, str):
          value = [value]
      elif value is None:
          value = []
      return value
  