gnome-session-bin 3.27.91-0ubuntu1 (arm64 binary) in ubuntu bionic

 The GNOME Session Manager is in charge of starting the core components
 of the GNOME desktop, and applications that should be launched at
 login time. It also features a way to save and restore currently
 running applications.
 .
 This package contains the binaries for the GNOME Session Manager, but
 no startup scripts. It is meant for those willing to start
 gnome-session by hand with the components of their choice, and for
 applications such as GDM that use gnome-session internally.