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

Returns Visit Outcomes, according to the parameters provided

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