changed return type of add(...)
changed return type of add(...)

RobertBierbauer/spatial,antonini/spatial,kangkot/spatial,kangkot/spatial,kangkot/spatial,antonini/spatial,cgourlay/spatial,antonini/spatial,kangkot/spatial,antonini/spatial,cgourlay/spatial,cgourlay/spatial,cgourlay/spatial,RobertBierbauer/spatial,kangkot/spatial,RobertBierbauer/spatial,antonini/spatial,cgourlay/spatial,RobertBierbauer/spatial,RobertBierbauer/spatial