public GeometryExpression<Geometry> difference(Geometry geometry) {
        return difference(ConstantImpl.create(geometry));
    }
Returns a geometric object that represents the Point
set difference of this geometric object with anotherGeometry.

@param geometry other geometry
@return difference between this and the other geometry
querydsl-spatial/src/main/java/com/querydsl/spatial/GeometryExpression.java