code: def iter_issues(self,
                      milestone=None,
                      state=None,
                      assignee=None,
                      mentioned=None,
                      labels=None,
                      sort=None,
                      direction=None,
                      since=None,
                      number=-1,
                      etag=None):
          
          url = self._build_url('issues', base_url=self._api)
  
          params = {'assignee': assignee, 'mentioned': mentioned}
          if milestone in ('*', 'none') or isinstance(milestone, int):
              params['milestone'] = milestone
          self._remove_none(params)
          params.update(
              issue_params(None, state, labels, sort, direction,
                           since)
          )
  
          return self._iter(int(number), url, Issue, params, etag)
docs: Iterate over issues on this repo based upon parameters passed.
  
          .. versionchanged:: 0.9.0
  
              The ``state`` parameter now accepts 'all' in addition to 'open'
              and 'closed'.
  
          :param int milestone: (optional), 'none', or '*'
          :param str state: (optional), accepted values: ('all', 'open',
              'closed')
          :param str assignee: (optional), 'none', '*', or login name
          :param str mentioned: (optional), user's login name
          :param str labels: (optional), comma-separated list of labels, e.g.
              'bug,ui,@high'
          :param sort: (optional), accepted values:
              ('created', 'updated', 'comments', 'created')
          :param str direction: (optional), accepted values: ('asc', 'desc')
          :param since: (optional), Only issues after this date will
              be returned. This can be a `datetime` or an `ISO8601` formatted
              date string, e.g., 2012-05-20T23:10:27Z
          :type since: datetime or string
          :param int number: (optional), Number of issues to return.
              By default all issues are returned
          :param str etag: (optional), ETag from a previous request to the same
              endpoint
          :returns: generator of :class:`Issue <github3.issues.issue.Issue>`\ s