class_docstr: This class maps to the `<td>` element of the html table.
code: def get_number_format(self):
      if "TYPE_CURRENCY" in self.element.get("class", "").split():
          return FORMAT_CURRENCY_USD_SIMPLE
      if "TYPE_INTEGER" in self.element.get("class", "").split():
          return "#,##0"
      if "TYPE_PERCENTAGE" in self.element.get("class", "").split():
          return FORMAT_PERCENTAGE
      if "TYPE_DATE" in self.element.get("class", "").split():
          return FORMAT_DATE_MMDDYYYY
      if self.data_type() == cell.TYPE_NUMERIC:
          try:
              int(self.value)
          except ValueError:
              return "#,##0.##"
          else:
              return "#,##0"
  
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 3 for calling the TableCell obj's underlying member method code with example usage: obj.get_number_format() and returns: FORMAT_CURRENCY_USD_SIMPLE, str, FORMAT_PERCENTAGE, FORMAT_DATE_MMDDYYYY, str, str