@staticmethod
def getArrayFromNode(rootNode, nodeName, default=None):
    """
        returns an array contained by given Node
        :param rootNode: (etree.Element) root node
        :param nodeName: the name of node to find
        :param default: returned value if node is None or contains empty string
        """
    array = []
    node = rootNode.find(nodeName)
    if node is not None and node.text is not None:
        for child in node:
            array.append(child)
        return array
    else:
        return default
