Make get request with where filter

[TomskDiver]

Hello.
I try make api get request for invoices with "where date" filter by your code.
I try write url as https://api.xero.com/api.xro/2.0/invoices?where='+encodeURIComponent('Date==DateTime(2019,11,27)') or https://api.xero.com/api.xro/2.0/invoices?where=Date==DateTime(2019,11,27)
And response is always false.
How to make Xero.fetchPrivateAppData('invoices?where=Date>=DateTime(2015, 01, 01)')
Please, help.