Tests if a geometry value is spatially disjoint from another value.
Two geometries are disjoint if their intersection is empty.
In other words, they are disjoint if there is no point anywhere in
geometry-expression that is also in geo2."
geometry-expression.ST_Disjoint( geo2 ) = 1 is equivalent to
geometry-expression.ST_Intersects( geo2 ) = 0.
If the geometry-expression contains circular strings, then these are interpolated to line strings.