Supported list types
Number list
This function returns the number of numeric values in l.
count(number list l) #Output: Number
This function returns the number of times n appears in l.
count(number n, number list l) #Output: Number
Text list
This function returns the number of text values in l.
count(string list l) #Output: Number
This function returns the number of times s appears in l.
count(string s, string list l) #Output: Number
Issue list
This functions returns the number of issues in l.
count(issue list l) #Output: Number