instance method permit_filters

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 1222
      def permit_filters(filters, on_unpermitted: nil, explicit_arrays: true)
        params = self.class.new
        multi_parameter_keys = nil

        filters.flatten.each do |filter|
          case filter
          when Symbol, String
            # Declaration [:name, "age"]
            multi_parameter_keys ||= keys.keep_if { |key| key.end_with?(")") }
            permitted_scalar_filter(params, filter, multi_parameter_keys)
          when Hash
            # Declaration [{ person: ... }]
            hash_filter(params, filter, on_unpermitted:, explicit_arrays:)
          end
        end

        unpermitted_parameters!(params, on_unpermitted:)

        params.permitted = true
        params
      end