Get the contents of a Document or a Collection.
A Collection is returned as a line-separated list of paths of contained Documents or Collections. Collection paths have a trailing slash.
A Document is obtained as serialized XML.
A non-XML data Document is obtained as a binary stream. The 'Content-Type' header reflects the property "content-type" of the document.
mime-type: text/xml or text/plain
When the Library member is a Collection, the result is of mime type text/plain and the contents is the list of paths of children members of the collection, one path per line. Collection paths have a trailing slash.
When Library member is a Document, the result is the XML contents of the document, serialized in XML and UTF-8.