libappstream3 software package provides Library to access AppStream services, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libappstream3
libappstream3 is installed in your system.
Make ensure the libappstream3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libappstream3 *
You will get with libappstream3 package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Libraries |
| Package | libappstream3 |
| Version | 0.9.4-1 |
| Description | Library to access AppStream services |
| Sub Section | Libs |