def hasSubseries(self):
        """Check if this component has subseries or not.

           Determined based on level of first subcomponent (series or subseries)
           or if first component has subcomponents present.

            :rtype: boolean
        """
        if self.c and self.c[0] and ((self.c[0].level in ('series', 'subseries')) or
                                     (self.c[0].c and self.c[0].c[0])):
            return True
        else:
            return False
Check if this component has subseries or not.

           Determined based on level of first subcomponent (series or subseries)
           or if first component has subcomponents present.

            :rtype: boolean