info.magnolia.rest.client.registry.RestClientRegistry is injected into RestSearchResultSupplier, but it's used only to get baseURL from info.magnolia.rest.client.RestClientDefinition.

In such a case info.magnolia.periscope.search.rest.RestSearchResultSupplierDefinition#restClientName can be change to #baseURL should be enough.

Or we should change RestSearchResultSupplier to do request via info.magnolia.rest.client.RestClient