code: def is_base_datatype(datatype, version=None):
      
      if version is None:
          version = get_default_version()
      lib = load_library(version)
      return lib.is_base_datatype(datatype)
docs: Check if the given datatype is a base datatype of the specified version
  
      :type datatype: ``str``
      :param datatype: the datatype (e.g. ST)
  
      :type version: ``str``
      :param version: the HL7 version (e.g. 2.5)
  
      :return: ``True`` if it is a base datatype, ``False`` otherwise
  
      >>> is_base_datatype('ST')
      True
      >>> is_base_datatype('CE')
      False