class_docstr: This class maps to the `<td>` element of the html table.
code: def data_type(self):
      cell_types = self.CELL_TYPES & set(
          self.element.get("class", "").split()
      )
      if cell_types:
          if "TYPE_FORMULA" in cell_types:
              # Make sure TYPE_FORMULA takes precedence over the other classes in the set.
              cell_type = "TYPE_FORMULA"
          elif cell_types & {
              "TYPE_CURRENCY",
              "TYPE_INTEGER",
              "TYPE_PERCENTAGE",
          }:
              cell_type = "TYPE_NUMERIC"
          else:
              cell_type = cell_types.pop()
      else:
          cell_type = "TYPE_STRING"
      return getattr(cell, cell_type)
  
imports: from openpyxl.cell import cell
  from openpyxl.styles import Font, Alignment, PatternFill, NamedStyle, Border, Side, Color
  from openpyxl.styles.fills import FILL_SOLID
  from openpyxl.styles.numbers import FORMAT_CURRENCY_USD_SIMPLE, FORMAT_PERCENTAGE
  from openpyxl.styles.colors import BLACK
label_desc: Use image node_id 2 for calling the TableCell obj's underlying member method code with example usage: obj.data_type() and returns: getattr