EPIC

Goal

Simplify the use of multipart messages, on both (http) listeners and (http) senders.

Description

Right now we have multiple implementations (such as multipartXmlSessionKey) to 'build' a multipart message. We have zipIterators and attachmentIterators, we should also implement a multipart iterator to read parts, or build a multipart message.
This will/should automatically add Multipart support for the ApiListener.

Tasks

• MultipartBuilder/CollectorPipe #3925
• Refactor collectors #4880
• Step one to uncouple reading multipart messages #7290
• HttpSender Multipart Request
• HttpSender Multipart Response
• WebServiceSender Multipart Request
• WebServiceSenderMultipart Response
• ApiListener Multipart Request
• ApiListener Multipart Response (implement responses multipart for api listener #3018)
• ForEachMultipartPipe