Compatibility with Ruby < 2.7

Author: dentarg

lib/influxdb/query/batch.rb

@@ -82,8 +82,14 @@ def fetch_series(response)
         denormalize_series
         denormalized_series_list
       ].each do |method_name|
-        define_method(method_name) do |*args, **kwargs|
-          client.send method_name, *args, **kwargs
+        if RUBY_VERSION < "2.7"
+          define_method(method_name) do |*args|
+            client.send method_name, *args
+          end
+        else
+          define_method(method_name) do |*args, **kwargs|
+            client.send method_name, *args, **kwargs
+          end
         end
       end
     end