ReadIdentity.
        :param str identity_id:
        :param str query_membership:
        :param str properties:
        :rtype: :class:`<Identity> <azure.devops.v5_0.identity.models.Identity>`

def read_identity(self, identity_id, query_membership=None, properties=None):
        """ReadIdentity.
        :param str identity_id:
        :param str query_membership:
        :param str properties:
        :rtype: :class:`<Identity> <azure.devops.v5_0.identity.models.Identity>`
        """
        route_values = {}
        if identity_id is not None:
            route_values['identityId'] = self._serialize.url('identity_id', identity_id, 'str')
        query_parameters = {}
        if query_membership is not None:
            query_parameters['queryMembership'] = self._serialize.query('query_membership', query_membership, 'str')
        if properties is not None:
            query_parameters['properties'] = self._serialize.query('properties', properties, 'str')
        response = self._send(http_method='GET',
                              location_id='28010c54-d0c0-4c89-a5b0-1c9e188b9fb7',
                              version='5.0',
                              route_values=route_values,
                              query_parameters=query_parameters)
        return self._deserialize('Identity', response)