PR Summary

• Update to Get function in two files
  This PR introduces changes to the Get function within item_item_tarball_with_ref_item_request_builder.go and item_item_zipball_with_ref_item_request_builder.go files. Now, besides returning an error, Get will also return a byte array. This addition facilitates the process of retrieving data and supports error handling efficiently. In cases where the request result is nil, the function will subsequently return nil instead of leading to potential disruptions.

• Improvement of Code Documentation
  Minor changes have been made to the comments and documentation links in both files. These updates will help in understanding the code structure better and provide more relevant documentation links to help developers. This change is likely to improve the readability and maintainability of the codebase.