rule.xml

<?xml version="1.0" encoding="UTF-8" ?>
<rule name="HeightAndFloorspaceRule" category="building">
    <input>
        <param type="dict">tags</param>
        <param type="float">area</param>
        <param type="int">ghsl_characteristics_type</param>
    </input>
    <function filepath="height_and_floorspace.py"/>
    <output>
        <param type="str">height</param>
        <param type="float">floorspace</param>
    </output>
</rule>