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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_tree(ident_hash, cursor, as_collated=False):
 """Return a JSON representation of the binder tree for ``ident_hash``."""

    uuid, version = split_ident_hash(ident_hash)
    cursor.execute(SQL['get-tree-by-uuid-n-version'],
                   (uuid, version, as_collated,))
    try:
        tree = cursor.fetchone()[0]
    except TypeError:  # NoneType
        raise ContentNotFound()
    if type(tree) in (type(''), type(u'')):
        return json.loads(tree)
    else:
        return tree