code: def add_table(self, table, row=None, col=0, row_spaces=1):
          
          name = table.name
          assert name is not None, "Tables must have a name"
          assert name not in self.__tables, "Table %s already exists in this worksheet" % name
          if row is None:
              row = self.__next_row
          self.__next_row = max(row + table.height + row_spaces, self.__next_row)
          self.__tables[name] = (table, (row, col))
          return row, col
docs: Adds a table to the worksheet at (row, col).
          Return the (row, col) where the table has been put.
  
          :param xltable.Table table: Table to add to the worksheet.
          :param int row: Row to start the table at (defaults to the next free row).
          :param int col: Column to start the table at.
          :param int row_spaces: Number of rows to leave between this table and the next.