**7**

### Bugs
- No evident bugs in the provided code.

### Optimizations
- Use more descriptive parameter names in the `init` method of `Comment` for clarity.
- Utilize `lazy var` for properties that are computationally expensive and are not needed immediately upon object instantiation.
- Consider making `Comment` conform to `Codable` directly instead of adding an inner `CodingData` struct.

### Good points
- Well-structured and organized code with clear commenting, aiding readability.
- Effective use of Swift features such as `struct`, `extension`, and computed properties.
- Thoughtful use of encapsulation and data transformation through the `CodingData` structure.

### Summary
The code is well-structured, leveraging Swift's language features deftly, like extensions, to maintain code clarity and manage complexity. Code comments provide a good explanation of each property’s purpose, aiding future maintenance. It’s ready for integration but could be optimized for clarity and performance.

### Open source alternatives
- **SwiftyJSON**: Although primarily focused on JSON parsing, SwiftyJSON could ease the decoding process.
- **Codable** from the Swift Standard Library: Direct use of Codable can provide a cleaner approach without needing separate structs for coding/decoding purposes.