docs: def new_event(event):
    """
    Requests a new event be created in the store.
  
    http://msdn.microsoft.com/en-us/library/aa564690(v=exchg.140).aspx
  
    <m:CreateItem SendMeetingInvitations="SendToAllAndSaveCopy"
                xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages"
                xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
      <m:SavedItemFolderId>
          <t:DistinguishedFolderId Id="calendar"/>
      </m:SavedItemFolderId>
      <m:Items>
          <t:CalendarItem>
              <t:Subject>{event.subject}</t:Subject>
              <t:Body BodyType="HTML">{event.subject}</t:Body>
              <t:Start></t:Start>
              <t:End></t:End>
              <t:Location></t:Location>
              <t:RequiredAttendees>
                  {% for attendee_email in meeting.required_attendees %}
                  <t:Attendee>
                      <t:Mailbox>
                          <t:EmailAddress>{{ attendee_email }}</t:EmailAddress>
                      </t:Mailbox>
                  </t:Attendee>
               HTTPretty   {% endfor %}
              </t:RequiredAttendees>
              {% if meeting.optional_attendees %}
              <t:OptionalAttendees>
                  {% for attendee_email in meeting.optional_attendees %}
                      <t:Attendee>
                          <t:Mailbox>
                              <t:EmailAddress>{{ attendee_email }}</t:EmailAddress>
                          </t:Mailbox>
                      </t:Attendee>
                  {% endfor %}
              </t:OptionalAttendees>
              {% endif %}
              {% if meeting.conference_room %}
              <t:Resources>
                  <t:Attendee>
                      <t:Mailbox>
                          <t:EmailAddress>{{ meeting.conference_room.email }}</t:EmailAddress>
                      </t:Mailbox>
                  </t:Attendee>
              </t:Resources>
              {% endif %}
              </t:CalendarItem>
      </m:Items>
  </m:CreateItem>
    """
  
    id = T.DistinguishedFolderId(Id=event.calendar_id) if event.calendar_id in DISTINGUISHED_IDS else T.FolderId(Id=event.calendar_id)
  
    start = convert_datetime_to_utc(event.start)
    end = convert_datetime_to_utc(event.end)
  
    root = M.CreateItem(
      M.SavedItemFolderId(id),
      M.Items(
        T.CalendarItem(
          T.Subject(event.subject),
          T.Body(event.body or u'', BodyType="HTML"),
        )
      ),
      SendMeetingInvitations="SendToAllAndSaveCopy"
    )
  
    calendar_node = root.xpath(u'/m:CreateItem/m:Items/t:CalendarItem', namespaces=NAMESPACES)[0]
  
    if event.reminder_minutes_before_start:
      calendar_node.append(T.ReminderIsSet('true'))
      calendar_node.append(T.ReminderMinutesBeforeStart(str(event.reminder_minutes_before_start)))
    else:
      calendar_node.append(T.ReminderIsSet('false'))
  
    calendar_node.append(T.Start(start.strftime(EXCHANGE_DATETIME_FORMAT)))
    calendar_node.append(T.End(end.strftime(EXCHANGE_DATETIME_FORMAT)))
  
    if event.is_all_day:
      calendar_node.append(T.IsAllDayEvent('true'))
  
    calendar_node.append(T.Location(event.location or u''))
  
    if event.required_attendees:
      calendar_node.append(resource_node(element=T.RequiredAttendees(), resources=event.required_attendees))
  
    if event.optional_attendees:
      calendar_node.append(resource_node(element=T.OptionalAttendees(), resources=event.optional_attendees))
  
    if event.resources:
      calendar_node.append(resource_node(element=T.Resources(), resources=event.resources))
  
    if event.recurrence:
  
      if event.recurrence == u'daily':
        recurrence = T.DailyRecurrence(
          T.Interval(str(event.recurrence_interval)),
        )
      elif event.recurrence == u'weekly':
        recurrence = T.WeeklyRecurrence(
          T.Interval(str(event.recurrence_interval)),
          T.DaysOfWeek(event.recurrence_days),
        )
      elif event.recurrence == u'monthly':
        recurrence = T.AbsoluteMonthlyRecurrence(
          T.Interval(str(event.recurrence_interval)),
          T.DayOfMonth(str(event.start.day)),
        )
      elif event.recurrence == u'yearly':
        recurrence = T.AbsoluteYearlyRecurrence(
          T.DayOfMonth(str(event.start.day)),
          T.Month(event.start.strftime("%B")),
        )
  
      calendar_node.append(
        T.Recurrence(
          recurrence,
          T.EndDateRecurrence(
            T.StartDate(event.start.strftime(EXCHANGE_DATE_FORMAT)),
            T.EndDate(event.recurrence_end_date.strftime(EXCHANGE_DATE_FORMAT)),
          )
        )
      )
  
    return root