def get_listOfReactions(model):
    """
    return list of reactions of a SBML model
    """
    listOfReactions = None
    for e in model:
        if e.tag[0] == '{':
            uri, tag = e.tag[1:].split('}')
        else:
            tag = e.tag
        if tag == 'listOfReactions':
            listOfReactions = e
            break
    return listOfReactions
