Interfaces cannot have any functions implemented.
(...)
Interfaces are basically limited to what the Contract ABI can represent, and the conversion between the ABI and an interface should be possible without any information loss.
One way to know the source code is know a address of an interface deployed on a network which has its code verified.
Talking specifically about the AggregatorV3Interface.sol, there are one implementation for each data feed, for example:
Best Answer
So, I figured out a solution.
Step 1 - brownie pm install [ORGANIZATION]/[REPOSITORY]@[VERSION]. Do this in your terminal. In my case, it'll be
Step 2 - Add these in your VSCode settings,
All the versions are the latest as of 12-Dec-2021
Lastly to check all of your installed packages just type
brownie pm list
in your terminal. In my case, it looks something like this.VOILA!