code: def marker(self, lat, long, text, color=None, icon=None):
          
          try:
              self.dsmap = self._marker(lat, long, text, self.dsmap, color, icon)
              return self.dsmap
          except Exception as e:
              self.err(e, self.marker, "Can not get marker")
docs: Set the main map with a marker to the default map