accessing
fromNitter: aDictionary
	"created := (aDictionary at: 'pubDate') asDateAndTime."
	text := aDictionary at: 'text'.
	"id := aDictionary at: 'id'.
	authorId := aDictionary at: 'author_id'."
	user := aDictionary at: 'creator'.
	"conversationId := aDictionary at: 'conversation_id' ifAbsent: [ '' ]."
	^ self