def list(self, **params):
_, _, contacts = self.http_client.get("<STR_LIT>", params=params)<EOL>return contacts<EOL>
Retrieve all contacts

Returns all contacts available to the user according to the parameters provided

:calls: ``get /contacts``
:param dict params: (optional) Search options.
:return: List of dictionaries that support attriubte-style access, which represent collection of Contacts.
:rtype: list