taskmanager/task.go
func (s *Task) SetPublicMeta(name string, value interface{}) {
	if s.MetaData == nil {
		s.MetaData = make(map[string]interface{})
	}
	s.MetaData[name] = value
}
func (s *Task) SetPublicMeta(name string, value interface{}) {
	if s.MetaData == nil {
		s.MetaData = make(map[string]interface{})
	}
	s.MetaData[name] = value
}
//SetPublicMeta - set a public metadata record