snapshot.0.valid=true
snapshot.0.syncToken=50
snapshot.0.dirName=foo
snapshot.1.valid=true
snapshot.1.syncToken=200
snapshot.1.dirName=baz
snapshot.2.valid=false
snapshot.2.syncToken=100
snapshot.2.dirName=bar
snapshot.3.valid=false
snapshot.3.syncToken=500
snapshot.3.dirName=last