Indicates whether sibling edge pairs (i.e., pairs consisting of an edge
and its reverse edge) should be kept (KEEP) or discarded (DISCARD).
For example, if a polyline backtracks on itself, the DISCARD option
would cause this section of the polyline to be removed. Note that this
option may cause a single polyline to split into several pieces (e.g.,
if a polyline has a "lollipop" shape).
REQUIRES: sibling_pairs == { DISCARD, KEEP }
(the CREATE and REQUIRE options are not allowed)
Indicates whether sibling edge pairs (i.e., pairs consisting of an edge and its reverse edge) should be kept (KEEP) or discarded (DISCARD). For example, if a polyline backtracks on itself, the DISCARD option would cause this section of the polyline to be removed. Note that this option may cause a single polyline to split into several pieces (e.g., if a polyline has a "lollipop" shape).
REQUIRES: sibling_pairs == { DISCARD, KEEP } (the CREATE and REQUIRE options are not allowed)
DEFAULT: SiblingPairs::KEEP