The User Guide and the functionality of the code do not match up.
While the User Guide specifies that one or more optional fields need to be present, the feature in the code works without it.
From the User Guide
Executing editOrder 1
Command executes with no error, and no changes made.
Recommended Fix
1) Perhaps it would be good to use the similar checks that EditCommand used to see if any of it's fields are edited, otherwise it rejects the command.
2) Alternatively, if you want the command to work without any optional fields specified, it is a good idea to remove this line from the UG.
Problem
The User Guide and the functionality of the code do not match up. While the User Guide specifies that one or more optional fields need to be present, the feature in the code works without it.
From the User Guide
Executing
editOrder 1Command executes with no error, and no changes made.
Recommended Fix
1) Perhaps it would be good to use the similar checks that EditCommand used to see if any of it's fields are edited, otherwise it rejects the command. 2) Alternatively, if you want the command to work without any optional fields specified, it is a good idea to remove this line from the UG.