Prevent the method updateCustomField() from accepting NULL values

Problem Definition

The method updateCustomField(Long id, String name, String description, CustomFieldSearcher searcher)() mentioned in this documentation allows NULL values for the name parameter.

If this method is called by a script that passes a NULL value for the name parameter, a 500 error will be returned when accessing any page in JIRA except the admin section, as shown in the screenshot below:

For this reason, the method updateCustomField() should not allow null values.

Why this is important

Workaround

For now, the only workaround is to make sure that any script making a call to this function does not pass a NULL name.