1.1 --- a/imiptools/data.py	Wed Jul 29 16:40:28 2015 +0200
     1.2 +++ b/imiptools/data.py	Wed Jul 29 18:41:11 2015 +0200
     1.3 @@ -149,6 +149,15 @@
     1.4          dtend, dtend_attr = self.get_datetime_item("DTEND")
     1.5          return get_tzid(dtstart_attr, dtend_attr)
     1.6  
     1.7 +    def is_shared(self):
     1.8 +
     1.9 +        """
    1.10 +        Return whether this object is shared based on the presence of a SEQUENCE
    1.11 +        property.
    1.12 +        """
    1.13 +
    1.14 +        return self.get_value("SEQUENCE") is not None
    1.15 +
    1.16  # Construction and serialisation.
    1.17  
    1.18  def make_calendar(nodes, method=None):