Sample output of https://github.com/topobyte/osm4j-examples/blob/master/src/main/java/de/topobyte/osm4j/examples/history/HistoryOfRestaurants.java

gistfile1.txt

id: 726580699, lat: 53.077688, lon: 8.805772, timestamp: 2010-05-08 16:33
tags: [name=Gosch, amenity=restaurant, cuisine=sea_food]
upate on: 2010-05-10 09:04
  update tag 'cuisine': 'sea_food' -> 'seafood'
upate on: 2010-07-07 17:25
  position: lat: 53.077590, lon: 8.805676
upate on: 2010-10-21 17:39
  add tag 'wheelchair:yes'
upate on: 2013-01-02 02:39
  position: lat: 53.077601, lon: 8.805749
  add tag 'addr:housenumber:47'
  add tag 'addr:street:Lloydpassage'
upate on: 2013-06-27 11:36
  position: lat: 53.077633, lon: 8.805713
  add tag 'level:0'
  add tag 'opening_hours:Mo-Sa 08:00-20:00'
  update tag 'amenity': 'restaurant' -> 'fast_food'
  update tag 'name': 'Gosch' -> 'Gosch-Sylt Bremen'
upate on: 2014-02-16 11:34
  add tag 'addr:country:DE'
  add tag 'addr:postcode:28195'
  add tag 'addr:city:Bremen'