text: 
  """ Class description goes here. """
  
  import uuid
  from dataclay.serialization.python.DataClayPythonWrapper import DataClayPythonWrapper
  from dataclay.serialization.python.lang.BooleanWrapper import BooleanWrapper
  
  __author__ = 'Alex Barcelo <alex.barcelo@bsc.es>'
  __copyright__ = '2015 Barcelona Supercomputing Center (BSC-CNS)'
  
  
  class DCIDWrapper(DataClayPythonWrapper):
      """dataClay UUID (straightforward serialization)."""
      __slots__ = ("_nullable",)
  
      def __init__(self, nullable=False):
          self._nullable = nullable
  
      def read(self, io_file):
          if self._nullable:
              present = BooleanWrapper().read(io_file)
              if not present:
                  return None
          return uuid.UUID(bytes=str(io_file.read(16)))
  
      def write(self, io_file, value):
          if self._nullable:
              if value is None:
                  BooleanWrapper().write(io_file, False)
                  return
              else:
                  BooleanWrapper().write(io_file, True)
  
          io_file.write(value.get_bytes())
  