accessing
getLocalMessages
	
	| allTweets myTweets tweetsWithAntecesor |
	
	TweetsCollection storeDB.
	allTweets := Tweet storedInstances asOrderedCollection.
	allTweets ifNil: [ ^ nil ].
	myTweets := TweetsCollection new.
	tweetsWithAntecesor := allTweets select: [ :each | each timelines isNotEmpty and: [ each timelines keys first = self userName ]].
	myTweets messages: tweetsWithAntecesor.
	self messages: myTweets.
	^ self