docs: 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