code: def environment_schedule_unset(self, name):
          
          if not isinstance(name, basestring):
              raise TypeError("name can only be an instance of type basestring")
          self._call("environmentScheduleUnset",
                       in_p=[name])
docs: Schedules unsetting (removing) an environment variable when creating
          the next guest process.  This affects the
          :py:func:`IGuestSession.environment_changes`  attribute.
  
          in name of type str
              Name of the environment variable to unset.  This cannot be empty
              nor can it contain any equal signs.