code: def LoadData(self, data, custom_properties=None):
      
      self.__data = []
      self.AppendData(data, custom_properties)
docs: Loads new rows to the data table, clearing existing rows.
  
      May also set the custom_properties for the added rows. The given custom
      properties dictionary specifies the dictionary that will be used for *all*
      given rows.
  
      Args:
        data: The rows that the table will contain.
        custom_properties: A dictionary of string to string to set as the custom
                           properties for all rows.