code: def visit_Alt(
      self, node: Alt, is_loop: bool, is_gather: bool
  ) -> None:
      has_cut = any(isinstance(item.item, Cut) for item in node.items)
      with self.local_variable_context():
          if has_cut:
              self.print("cut = False")
          if is_loop:
              self.print("while (")
          else:
              self.print("if (")
          with self.indent():
              first = True
              for item in node.items:
                  if first:
                      first = False
                  else:
                      self.print("and")
                  self.visit(item)
                  if is_gather:
                      self.print("is not None")
  
          self.print("):")
          with self.indent():
              action = node.action
              if not action:
                  if is_gather:
                      assert len(self.local_variable_names) == 2
                      action = f"[{self.local_variable_names[0]}] + {self.local_variable_names[1]}"
                  else:
                      if self.invalidvisitor.visit(node):
                          action = "UNREACHABLE"
                      elif len(self.local_variable_names) == 1:
                          action = f"{self.local_variable_names[0]}"
                      else:
                          action = f"[{', '.join(self.local_variable_names)}]"
              elif "LOCATIONS" in action:
                  self.print(
                      "tok = self._tokenizer.get_last_non_whitespace_token()"
                  )
                  self.print("end_lineno, end_col_offset = tok.end")
                  action = action.replace(
                      "LOCATIONS", self.location_formatting
                  )
  
              if is_loop:
                  self.print(f"children.append({action})")
                  self.print(f"mark = self._mark()")
              else:
                  if "UNREACHABLE" in action:
                      action = action.replace(
                          "UNREACHABLE", self.unreachable_formatting
                      )
                  self.print(f"return {action}")
  
          self.print("self._reset(mark)")
          # Skip remaining alternatives if a cut was reached.
          if has_cut:
              self.print("if cut: return None")
  
imports: import os.path
  import token
  from typing import IO, Any, Dict, Optional, Sequence, Set, Text, Tuple
  from pegen import grammar
  from pegen.grammar import Alt, Cut, Forced, Gather, GrammarVisitor, Group, Lookahead, NamedItem, NameLeaf, NegativeLookahead, Opt, PositiveLookahead, Repeat0, Repeat1, Rhs, Rule, StringLeaf
  from pegen.parser_generator import ParserGenerator
label_desc: Use image node_id 7 for calling the PythonParserGenerator obj's underlying member method code with example usage: obj.visit_Alt(node, is_loop, is_gather) without return types