[Flow] Entity Security Syntax

[Christian Loock]

Hello,

is there a documentation of what can be done inside the entity definition
inside your Policy.yam

For example:

I have a field languages in my security context and want to compare and
language object to this collection. Somthing like this:

Acme_MyPackage_Language: 'in_array(current.securityContext.languages, this')

Would this be possible and where can i read what syntax is supported?

Greetings,

Christian