code: def set_size(self, size):
          
          buffer_size = self._calculate_zoom_buffer_size(size, self._zoom_level)
          self._size = size
          self._initialize_buffers(buffer_size)
docs: Set the size of the map in pixels
  
          This is an expensive operation, do only when absolutely needed.
  
          :param size: (width, height) pixel size of camera/view of the group