code: func newHelperMethodInclude(ln *line, rslt *result, src *source, parent element, opts *Options) (*helperMethodInclude, error) {
  	if len(ln.tokens) < 3 {
  		return nil, fmt.Errorf("no template name is specified [file: %s][line: %d]", ln.fileName(), ln.no)
  	}
  
  	var pipeline string
  
  	if len(ln.tokens) > 3 {
  		pipeline = strings.Join(ln.tokens[3:], space)
  	}
  
  	e := &helperMethodInclude{
  		elementBase:  newElementBase(ln, rslt, src, parent, opts),
  		templateName: ln.tokens[2],
  		pipeline:     pipeline,
  	}
  
  	return e, nil
  }
docs: // newHelperMethodInclude creates and returns a helper method include.