mutation.erb in graphql-1.10.0.pre1

- old
+ new

@@ -1,6 +1,6 @@
 module Mutations
-  class <%= mutation_name %> < BaseMutation
+  class <%= mutation_name %> < GraphQL::Schema::RelayClassicMutation
     # TODO: define return fields
     # field :post, Types::PostType, null: false
 
     # TODO: define arguments
     # argument :name, String, required: true