API PlayerLocationMixin IsValid

Indicates the PlayerLocation validly identifies a player.
 isValid = location:IsValid()
== Returns ==
; isValid : - Returns true when appropriate methods have been used to uniquely identify a player; otherwise false.
== Details ==
* Reasons for returning false include:
** The mixin was manually prepared and not yet assigned to a player
** An invalid reference was used, such as a GUID that does not exist
** A 'relative' reference like a UnitId was used, but currently does not point to a player (ie, "target" while targetting an NPC)
== Patch changes ==
* 
== External links ==
== References ==