The function returns TEXT LIST of user names (not be confused with full user name) of those active users playing a project role with the name projectRoleName in the current issue's project.
Parameter projectRoleName can be a comma-separated list of project role names, returning the users that play any of the project roles.
usersInRole(text projectRoleName) #Output: Text list
Equivalent to the previous function but with extra argument projectKey for selecting the project argument projectRoleName refers to.
usersInRole(text projectRoleName, text projectKey) #Output: Text list