Python XCAP client library
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XCAP protocol, defined in RFC 4825, allows a client to read, write,
and modify application configuration data stored in XML format on a
server. XCAP maps XML document sub-trees and element attributes to
HTTP URIs, so that these components can be directly accessed by HTTP.
An XCAP server used by XCAP clients to store data like presence policy
in combination with a SIP Presence server that supports
PUBLISH/SUBSCRIBE/NOTIFY SIP methods can provide a complete SIP SIMPLE
solution.

Its primary purpose is to be a dependency for the Blink SIP client.