ers. Defaults to None.</p>
<p>E.g. <cite>{“color” : “red”, “price”: 4.20}</cite>. Optional.</p>
<p>E.g. <cite>{“max_price” : 15.66, “min_price”: 4.20}</cite></p>
<p><cite>price</cite> is the metadata field, means range filter(4.20&lt;’price’&lt;15.66).</p>
<p>E.g. <cite>{“maxe_price” : 15.66, “mine_price”: 4.20}</cite></p>
<p><cite>price</cite> is the metadata field, means range filter(4.20&lt;=’price’&lt;=15.66).</p>
<p>include_fields: The fields whether included in the 