/usr/share/map_msgs/msg/PointCloud2Update.msg is in libmap-msgs-dev 1.13.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | uint32 ADD=0
uint32 DELETE=1
Header header
uint32 type # type of update, one of ADD or DELETE
sensor_msgs/PointCloud2 points
|