SoPickedPointList(3) on Linux
The text d3a6d921cb35, as Debian 8 (Jessie) shipped it.
The SoPickedPointList class is a container for pointers to SoPickedPoint objects. This list class will delete the picked points when destructed/truncated, or when a picked point in the list is replaced by another picked point The caller is responsible for allocating the picked points passed to the list, but should not deallocate them since this will be handled by the list.