TopoGeo_AddLineString — Adds a linestring to an existing topology using a tolerance and possibly splitting existing edges/faces. Returns edge identifiers.
SETOF integer TopoGeo_AddLineString(varchar  atopology, geometry  aline, float8  tolerance);
Adds a linestring to an existing topology and returns a set of edge identifiers forming it up. The given line will snap to existing nodes or edges within given tolerance. Existing edges and faces may be split by the line.
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Updating statistics about topologies being loaded via this function is up to caller, see maintaining statistics during topology editing and population.  | 
Availability: 2.0.0