154   public function setId($id)  argument
156     $this->headers->set("Message-ID", $id);
518   public function attach(Swift_Message_Mime $child, $id=null)  argument
525           $id = $this->getReference("parent", "alternative")->addChild($child, $id, $sign);
526           $this->setReference("alternative", $id, $child);
529           $id = "cid:" . $child->getContentId();
530           $id = $this->getReference("parent", "related")->addChild($child, $id, 1);
531           $this->setReference("related", $id, $child);
534           $id = $this->getReference("parent", "mixed")->addChild($child, $id, 1);
535           $this->setReference("mixed", $id, $child);
540       return $id;
551   public function detach($id)  argument
556         case array_key_exists($id, $this->references["alternative"]):
557           $this->getReference("parent", "alternative")->removeChild($id);
558           unset($this->references["alternative"][$id]);
560         case array_key_exists($id, $this->references["related"]):
561           $this->getReference("parent", "related")->removeChild($id);
562           unset($this->references["related"][$id]);
564         case array_key_exists($id, $this->references["mixed"]):
565           $this->getReference("parent", "mixed")->removeChild($id);
566           unset($this->references["mixed"][$id]);
569 …throw new Swift_Message_MimeException("Unable to detach part identified by ID '" . $id . "' since …
611     foreach ($from as $id => $ref)
618         case "related": $this->getReference("related", $tag)->addChild($ref, $id, $sign);
620         case "mixed": $this->getReference("mixed", $tag)->addChild($ref, $id, $sign);
623       $this->getReference("parent", $old_branch)->removeChild($id);
680     foreach ($from as $id => $ref)
685       $this->getReference("parent", $new_branch)->addChild($ref, $id, $sign);
688         case "related": $this->getReference("related", $tag)->removeChild($id);
690         case "mixed": $this->getReference("parent", $old_branch)->removeChild($id);