This operator calculates the number of points connected to the given point. It returns the number of such points, which can then be queried individually using Neighbor and Import Attribute inside a For-Loop.
Possible reasons for failure include:
No input connected to the specified OP index. The point number is out of range for the given index.
Disk file to read for the geometry. Can be
op:/obj/object/soppath to read live SOP geometry.
The point number in the geometry to find a neighbor of.