indicators-client software package provides Indicators client test application, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install indicators-client
indicators-client is installed in your system.
Make ensure the indicators-client package were installed using the commands given below,
$ sudo dpkg-query -l | grep indicators-client *
You will get with indicators-client package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | X Window System software |
| Package | indicators-client |
| Version | 8.14+16.10.20160922-0ubuntu2 |
| Description | Indicators client test application |
| Sub Section |