Search configuration

Case 2
Name: Search by sellingMethod.
Expected result: Get the search result by 'sellingMethod' field with 'timberEnglish' value.
The result should contain only 'timberEnglish' auctions.

Case 3
Name: Search by auction organizer.
Expected result: Get search result by auction organizer: `sellingEntity.identifier.id` field.
The result should contain only the requested organizer.

Case 4
Name: Search by document type.
Expected result: Perform a search by documents of timberEnglish auction, using 'contractProforma' document type.
The result should contain auctions with contractProforma documents only.
'documents[].documentType'