```ruby
# Replace Fixtures.identify for binary UUIDs.
module GoldRecord
  module Fixtures
    def self.included(base)
      base.class_eval do
        def self.identify(label)
          UUIDTools::UUID.sha1_create(UUIDTools::UUID_DNS_NAMESPACE, label.to_s).raw
        end
      end
    end
  end
end
```

Change Fixtures.identify to mimic MySQL’s binary(16) representation of integer input.
user
```ruby
module GoldRecord
  module Fixtures
    def self.included(base)
      base.class_eval do
        class << self
          # Patch Fixtures.identify for binary UUIDs.
          def identify_with_padding(label)
            "%-16d" % identify_without_padding(label)
          end
          alias_method_chain :identify, :padding
        end
      end
    end
  end
end
```
assistant