Liberators exists in many places. For your company they may be installed on a private network. Other companies have Liberators installed in the cloud. Some use public Liberators open to multiple clients and some use private installations that are only used for the given company, or even a group within the company.
The easiest way to specify which liberator to query is to set the liberator.url property. For example
liberator.url = 'https://api.cloudquant.ai'
or
liberator.url = 'http://127.0.0.1:47753'
Liberator typically runs on port 47753 for most installations.