```ruby
require 'radix'
if RUBY_PLATFORM == 'java'
    require 'couchbase-jruby-model'
else
    require 'couchbase-model'
end
require 'couchbase-id/generator'


module CouchbaseId
end
```

Use radix/base for ruby 2.1 compatibility
user
```ruby
require 'radix/base'

if RUBY_PLATFORM == 'java'
    require 'couchbase-jruby-model'
else
    require 'couchbase-model'
end
require 'couchbase-id/generator'


module CouchbaseId
end
```
assistant