Changes to Retorna a lista de unidades disponíveis para inclusão de imóvel no Imoview

the lista/items/codigo response's property format changed from Int64 to int64 for status 200

the quantidade response's property format changed from Int64 to int64 for status 200

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 429

added the non-success response with the status 500