[UPROPERTY](Programming/UnrealArchitecture/Reference/Properties)(EditAnywhere, Category=Options,
Meta=(EditCondition="OperationMode == EMirrorOperationMode::MirrorAndAppend"))
bool bWeldVerticesOnMirrorPlane
Weld vertices that lie on the mirror plane. Vertices will not be welded if doing so would give an edge more than two faces, or if they are part of a face in the plane.