Supported list types
Number list
This function returns the first element of a number list. If the list is empty, the function returns NULL.
first(numberList) #Output: Number
Text list
This function returns the first element of a text list. If the list is empty, the function returns NULL.
first(textList) #Output: Text
Issue list
The function returns an issue list with the first element of the given issue list. If the issue list is empty, the function returns an empty ISSUE LIST.
first(issueList) #Output: Issue list