'Create a new VO Service Catalog with user parameters.
Parameters
title : str
Title of the catalog.
url : str
Access URL of the service. This is used to build queries.
kwargs : dict
Additional metadata as keyword-value pairs describing the catalog,
except \'title\' and \'url\'.
Returns
cat : `VOSCatalog`
VO Service Catalog.
Raises
TypeError
Multiple values given for keyword argument.'

@classmethod
def create(cls, title, url, **kwargs):

    tree = {u'title': title, u'url': url}
    tree.update(kwargs)
    return cls(tree)
