The Service Module has 3 public server actions that:

• Checks if a given text contains a valid ISBN-13 (may include hyphens or spaces but no other chars)
• Converts the first 9 digits of a 10 digit ISBN to a 13 digit ISBN text output (may include hyphens or spaces but no other chars). Returns NullTextIdentifier if it can't be converted to a valid ISBN-13. This action is also a function.
• Returns the Book Details for a valid ISBN-13, in a structure with several attributes. Has exception handling for invalid ISBN-13 or no details found (empty response from the OpenLibrary API).

It also has some Auxiliar Server Actions used:

• Converts a list of integers to a string
• Converts a string to a list of integers. Ignores hyphens and spaces, but returns an empty list if other char is found