'Stores how many decent nodes are under a parent node'

def update_node_count(self, node, add_to_count):

    current_score = 0
    count_string = self.parser.getAttribute(node, 'gravityNodes')
    if count_string:
        current_score = int(count_string)
    new_score = (current_score + add_to_count)
    self.parser.setAttribute(node, 'gravityNodes', str(new_score))
