Retrieves user information for single user with specified identifier.
The user identifier.
Optionaltype: null | stringOptional user info handler type. If null, the default handler is used.
User information or null user not found by identifier.
Retrieves user information for multiple users with specified identifiers.
A collection of the user identifiers.
Optionaltype: null | stringOptional user info handler type. If null, the default handler is used.
A collection of user information for users that are found.
Repository for retrieving user information based on user identifier(s).