## What
This change does two things:
It **removes the `environment` option** from the initialization
examples. This option is deprecated and only causes confusion. There's
no good reason to have it lying around in the examples.
It also **updates the explanation of the code samples**, telling you
that you need to generate an API key and linking you to the reference
doc and how to guide.
Relates to: #2782.
983d3a9513