Get the telegram IDs of all contacts.
Returns an array of Telegram user IDs for all contacts (0 if a contact does not have an associated Telegram account or have hidden their account using privacy settings).
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contacts.getContactIDs#7adc669d hash:long = Vector<int>;| Name | Type | Description | 
|---|---|---|
| hash | long | Hash used for caching, for more info click here | 
How to fetch results from large lists of objects.