docs: def get_data(self, workbook, row, col, formula_values={}):
          """
          :return: 2d numpy array for this table with any formulas resolved to the final
                   excel formula.
          :param xltable.Workbook workbook: Workbook the table has been added to.
          :param int row: Row where the table will start in the sheet (used for resolving formulas).
          :param int col: Column where the table will start in the sheet (used for resolving formulas).
          :param formula_values: dict to add pre-calculated formula values to (keyed by row, col).
          """
          if workbook:
              prev_table = workbook.active_table
              workbook.active_table = self
          try:
              return self._get_data_impl(workbook, row, col, formula_values)
          finally:
              if workbook:
                  workbook.active_table = prev_table