code: func (v *printVisitor) VisitMustache(node *MustacheStatement) interface{} {
  	v.indent()
  	v.str("{{ ")
  
  	node.Expression.Accept(v)
  
  	v.str(" }}")
  	v.nl()
  
  	return nil
  }
docs: // VisitMustache implements corresponding Visitor interface method