Hello,

https://github.com/nelmio/alice/blob/v3.5.8/doc/advanced-guide.md#references

@user_{alice, bob} => @user_alice or @user_bob

If i:

client_type:

AppBundle\Entity\ClientType:
    client_type_{1..10}:
        name: '<name()>'

include:
    - client_type.yaml

AppBundle\Entity\Client:
    client_{1..20}:
        name: '<name()>'
        client_type: '@cl

The docgen tool should generate documentation of the identifiers and functions
supported within an environment (checker/env.go). The tool should probably
generate markdown.

I got started in #166, but ideally all errors from both implementations would have the same (and thoughtful) message.