GraphQL Ruby integrate with solidus searchkick

Question

i'm currently working on an ecommerce project, and start to implement graphql ruby with my solidus, now i'm about to build on faceted search using solidus searchkick

there is a custom function provided by solidus_searchkick

searcher = build_searcher(params.merge(fields: fields))
@products = searcher.retrieve_products   

my idea was to pass the params to graphql query and perform the search while return the products list

query facetQuery($params: String){
  viewer {
    facetProduct(params: $params){ ... }
  }
}

However if i put

connection :facetProduct, Types::ProductType.connection_type do
    resolve -> (obj, args, context) {
      searcher = build_searcher(params)
      searcher.retrieve_products
    }
  end

i got a problem build_search is not defined, is there a way to integrate this function directly to graphql, currently i solved this problem over api, via httparty which is not very elegant solution