```ruby
module TimestampAPI
  module Utils
    def camelize(symbol)
      symbol.to_s.split('_').each_with_index.map{ |chunk, idx| idx == 0 ? chunk : chunk.capitalize }.join
    end
  end
end
```

Fix a bug where camelization did not properly force first letter to be lowercase
user
```ruby
module TimestampAPI
  module Utils
    def camelize(symbol)
      symbol.to_s.split('_').each_with_index.map{ |chunk, idx| idx == 0 ? chunk : chunk.capitalize }.join.gsub(/^\w/, &:downcase)
    end
  end
end
```
assistant