def METHOD_NAME(self, root):
    """
    Check to see if the <xs:import/> already exists
    in the specified schema root by matching I{namesapce}.
    @param root: A schema root.
    @type root: L{Element}
    """
    for node in root.children:
        if node.name != 'import':
            continue
        ns = node.get('namespace')
        if self.ns == ns:
            return 1
    return 0