orient.getGraph() has been removed from distro

[qualitesys]

On this page https://orientdb.com/docs/2.2.x/Functions-DB-Access.html it is said that orient.getGraph() returns the current transactional graph database instance.

In fact getGraph is not recognized in v3.x

Said here orientechnologies/orientdb#8291 the "I think this is related to the fact that OrientGraph is no longer in the classpath, as it implements Apache TinkerPop 2, that was removed from the standard distro and replaced with TinkerPop3 in the orientdb-tp3 distribution"

It is very hard to understand and test for a newbie.
Is it possible to adjust the docs please ?

How to use the "transactional graph databse instance" then ?
Thanks for your help