accessing
getMessages
	| lastTweetsRaw lastTweets |
	lastTweetsRaw := self rssFeed xmlDocument xpath: '//item'.
	lastTweets := TweetsCollection new.
	lastTweetsRaw do: [ :rssTweet | 
		lastTweets add: ((Tweet new fromNitterRssItem: rssTweet ))
	].
	^ lastTweets