code: func (s StreamName) Join(o StreamName) StreamPath {
  	return StreamPath(fmt.Sprintf("%s%c%c%c%s",
  		s.Trim(), StreamNameSep, StreamPathSep, StreamNameSep, o.Trim()))
  }
docs: // Join concatenates a stream name onto the end of the current name, separating
  // it with a separator character.