REST API (v10) call to retrieve a set of related records

Hello forum,

We want to retrieve meeting, call, email related to contact via single api call.

As per api documentation one need to do following api call.

GET /<module>/:record/collection/:collection_name

What should be value of :collection_name ?

For example :

In case of following api call

GET /Contacts/:record/collection/:what_should_be_value_of_collection_name

GET /Leads/:record/collection/:what_should_be_value_of_collection_name

Thanks,

Alpesh