Dump the given
channel in an Atom formatted file in
If the local PubSubHubbub hub has been activated (with hub_switch) notifies remote subscribers about the new items which has been added since previous invocation of this function for the same FeedChannel.
the FeedChannel to dump in the file.
list of FeedItems to be added in the feed.
URI of the file to write. The full path must exists.
true if the file is successfully written, false otherwise.