A huge question about ionic unzip file plugin!Help, Help,Help

I use the cordova-plugin-zip to unzip a file download from server in a ionic2 App!

I follow the instructions like:

import {Zip} from ‘ionic-native’;
Zip.unzip(sourceZip, destUrl, onProgress)’

The question is what the sourceZip is and what the destUrl is?

Where should I put my zip file as a sourceZip and where should I put a new folder as a destUrl ?

Here is the construct of my App!

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