popcorn :: Repository :: find_all
queryUsing query == null will retrieve all the document in the repository.
	redef fun find_all(query, skip, limit) do
		var res = new Array[E]
		for e in collection.find_all(query or else new JsonObject, skip, limit) do
			res.add deserialize(e.to_json).as(E)
		end
		return res
	end
					lib/popcorn/pop_repos.nit:329,2--335,4