def stream(self, to=values.unset, from_=values.unset,<EOL>parent_call_sid=values.unset, status=values.unset,<EOL>start_time_before=values.unset, start_time=values.unset,<EOL>start_time_after=values.unset, end_time_before=values.unset,<EOL>end_time=values.unset, end_time_after=values.unset, limit=None,<EOL>page_size=None):
limits = self._version.read_limits(limit, page_size)<EOL>page = self.page(<EOL>to=to,<EOL>from_=from_,<EOL>parent_call_sid=parent_call_sid,<EOL>status=status,<EOL>start_time_before=start_time_before,<EOL>start_time=start_time,<EOL>start_time_after=start_time_after,<EOL>end_time_before=end_time_before,<EOL>end_time=end_time,<EOL>end_time_after=end_time_after,<EOL>page_size=limits['<STR_LIT>'],<EOL>)<EOL>return self._version.stream(page, limits['<STR_LIT>'], limits['<STR_LIT>'])<EOL>
Streams CallInstance records from the API as a generator stream.
This operation lazily loads records as efficiently as possible until the limit
is reached.
The results are returned as a generator, so this operation is memory efficient.

:param unicode to: Phone number or Client identifier of calls to include
:param unicode from_: Phone number or Client identifier to filter `from` on
:param unicode parent_call_sid: Parent call SID to filter on
:param CallInstance.Status status: The status of the resources to read
:param datetime start_time_before: Only include calls that started on or after this date
:param datetime start_time: Only include calls that started on or after this date
:param datetime start_time_after: Only include calls that started on or after this date
:param datetime end_time_before: Only include usage that occurred on or before this date
:param datetime end_time: Only include usage that occurred on or before this date
:param datetime end_time_after: Only include usage that occurred on or before this date
:param int limit: Upper limit for the number of records to return. stream()
                  guarantees to never return more than limit.  Default is no limit
:param int page_size: Number of records to fetch per request, when not set will use
                      the default value of 50 records.  If no page_size is defined
                      but a limit is defined, stream() will attempt to read the
                      limit with the most efficient page size, i.e. min(limit, 1000)

:returns: Generator that will yield up to limit results
:rtype: list[twilio.rest.api.v2010.account.call.CallInstance]