# File lib/jmespath/nodes/function.rb, line 342
      def call(args)
        if args.count == 2
          glue = args[0]
          values = args[1]
          if !(String === glue)
            return maybe_raise Errors::InvalidTypeError, "function join() expects the first argument to be a string"
          elsif Array === values && values.all? { |v| String === v }
            values.join(glue)
          else
            return maybe_raise Errors::InvalidTypeError, "function join() expects values to be an array of strings"
          end
        else
          return maybe_raise Errors::InvalidArityError, "function join() expects an array of strings"
        end
      end