driver-legacy/src/main/com/mongodb/QueryBuilder.java
@SuppressWarnings("unchecked")
    public QueryBuilder withinBox(final double x, final double y, final double x2, final double y2) {
        addOperand(QueryOperators.WITHIN,
                   new BasicDBObject(QueryOperators.BOX, new Object[]{new Double[]{x, y}, new Double[]{x2, y2}}));
        return this;
    }
@SuppressWarnings("unchecked")
    public QueryBuilder withinBox(final double x, final double y, final double x2, final double y2) {
        addOperand(QueryOperators.WITHIN,
                   new BasicDBObject(QueryOperators.BOX, new Object[]{new Double[]{x, y}, new Double[]{x2, y2}}));
        return this;
    }
Equivalent to a $within operand, based on a bounding box using represented by two corners

@param x  the x coordinate of the first box corner.
@param y  the y coordinate of the first box corner.
@param x2 the x coordinate of the second box corner.
@param y2 the y coordinate of the second box corner.
@return {@code this}