Where is a -> operator documented?

[MartinMarko]

On web page www.dynatrace.com, there is a picture with the query

I am looking for the documentation for `->` operator, because I am getting an error

[joeistyping · Accepted solution]

Hiya Martin,

The "->" is a deprecated operator and isn't required to access the host relationship to processes
What you're looking for to start is: 

fetch dt.entity.process_group
| fields entity.name, host = runs_on

Hope this helps!