docs: def toLily(self):
          '''
          Method which converts the object instance, its attributes and children to a string of lilypond code
  
          :return: str of lilypond code
          '''
          self.CheckDivisions()
          self.CheckTotals()
          staves = self.GetChildrenIndexes()
          name = ""
          shortname = ""
          if hasattr(self.item, "name"):
              name = self.item.name
              name = helpers.SplitString(name)
          if hasattr(self.item, "shortname"):
              shortname = helpers.SplitString(self.item.shortname)
          variables = self.CalculateVariable(str(self.index), staves)
          first_part = ""
          for staff, variable in zip(staves, variables):
              staffstring = variable
              if hasattr(
                      self.GetChild(staff),
                      "tab") and self.GetChild(staff).tab:
                  staffstring += " = \\new TabStaff"
              elif hasattr(self.GetChild(staff), "drum") and self.GetChild(staff).drum:
                  staffstring += " = \\drums"
              else:
                  staffstring += " = \\new Staff"
              if len(staves) == 1:
                  if name != "":
                      staffstring += " \with {\n"
                      staffstring += "instrumentName = " + name + " \n"
                      if shortname != "":
                          staffstring += "shortInstrumentName = " + \
                              shortname + " \n"
                      staffstring += " }"
              staffstring += "{" + self.GetChild(staff).toLily() + " }\n\n"
              first_part += staffstring
  
          second_part = ""
          if len(variables) > 1:
              second_part += "\\new StaffGroup "
              if name != "":
                  second_part += "\with {\n"
                  second_part += "instrumentName = " + name + " \n"
                  second_part += " }"
              second_part += "<<"
          second_part += "\n".join(["\\" + var for var in variables])
          if len(variables) > 1:
              second_part += ">>"
          return [first_part, second_part]