public static BooleanExpression dwithin(Expression<? extends Geometry> expr1,
                                            Expression<? extends Geometry> expr2, double distance) {
        return Expressions.booleanOperation(SpatialOps.DWITHIN, expr1, expr2, ConstantImpl.create(distance));
    }
Returns true if the geometries are within the specified distance of one another.
For geometry units are in those of spatial reference and For geography units are in meters.

@param expr1 geometry
@param expr2 other geometry
@param distance distance
@return true, if with distance of each other
querydsl-spatial/src/main/java/com/querydsl/spatial/jts/JTSGeometryExpressions.java