The refine parameter should be able to have multiple values, as per documentation: "... for example: refine=price=(0..10)&refine=c_refinementColor=green."
However the type we have is string. If we try to pass different refine values in the string, the '&' value gets encoded.
We need the type updated to refine?: Arrayfor it to function properly, as it did in the v4.0.0