void function SetBeamColor(entity ent, vector color)
void function RemoveBeamFromEntity(entity ent)
bool function EntityHasBeam(entity ent)
    
// return the fxid
int function AddBeamToEntity(entity ent, vector color= < 255, 255, 255>)
    
void function RegisterBeamForClass(string className, vector color= < 255, 255, 255 >)