docs: def set_property(node_uri, property_name, property_value, ossos_base=True):
      """
      Sets the value of a property on a node in VOSpace.  If the property
      already has a value then it is first cleared and then set.
  
      @param node_uri:
      @param property_name:
      @param property_value:
      @param ossos_base:
      @return:
      """
      node = client.get_node(node_uri)
      property_uri = tag_uri(property_name) if ossos_base else property_name
  
      # If there is an existing value, clear it first
      if property_uri in node.props:
          node.props[property_uri] = None
          client.add_props(node)
  
      node.props[property_uri] = property_value
      client.add_props(node)