code: def prog(self):
      localctx = AutolevParser.ProgContext(self, self._ctx, self.state)
      self.enterRule(localctx, 0, self.RULE_prog)
      self._la = 0  # Token type
      try:
          self.enterOuterAlt(localctx, 1)
          self.state = 57
          self._errHandler.sync(self)
          _la = self._input.LA(1)
          while True:
              self.state = 56
              self.stat()
              self.state = 59
              self._errHandler.sync(self)
              _la = self._input.LA(1)
              if not (
                  ((_la) & ~0x3F) == 0
                  and ((1 << _la) & 299067041120256) != 0
              ):
                  break
  
      except RecognitionException as re:
          localctx.exception = re
          self._errHandler.reportError(self, re)
          self._errHandler.recover(self, re)
      finally:
          self.exitRule()
      return localctx
  
imports: from antlr4 import *
  from io import StringIO
  import sys
label_desc: Use image node_id 2 for calling the AutolevParser obj's underlying member method code with example usage: obj.prog() and returns: localctx