Inconsistent behavior of JSON.create_id between JRUBY and MRI, unable to use Symbol

[keklabs]

When I use the combination of ":create_additions" and ":symbolize_names" on MRI, than the JSON.create_id on MRI have to be set to a Symbol ":json_class" - because #https://bugs.ruby-lang.org/issues/12219

But when I run the same code in JRuby, I got

Minitest::UnexpectedError: TypeError: no implicit conversion of Symbol into String
    json/ext/Parser.java:168:in `initialize'
    json/ext/Parser.java:151:in `new'
    C:/software/ruby/jruby9k/lib/ruby/gems/shared/gems/json-1.8.3-java/lib/json/common.rb:155:in `parse'

becase JRUBY doesn't support JSON.create_id as Symbol.

Workaround for my code exists,

      options[:create_additions] = true
      options[:symbolize_names]=true
      if defined?(RUBY_ENGINE) && RUBY_ENGINE != 'jruby'      
        JSON.create_id =JSON.create_id.to_sym
      end
      object=JSON.parse(json, options)

but I prefer to avoid detection of RUBY_ENGINE and have same behavior for MRI and JRUBY.

Tested on MRI 2.2.1 and JRUBY 9.0.4.0