code: def codegen(self):
      localctx = AutolevParser.CodegenContext(
          self, self._ctx, self.state
      )
      self.enterRule(localctx, 48, self.RULE_codegen)
      self._la = 0  # Token type
      try:
          self.enterOuterAlt(localctx, 1)
          self.state = 322
          self.match(AutolevParser.ID)
          self.state = 323
          self.functionCall()
          self.state = 335
          self._errHandler.sync(self)
          _la = self._input.LA(1)
          if _la == 1:
              self.state = 324
              self.match(AutolevParser.T__0)
              self.state = 325
              self.matrixInOutput()
              self.state = 330
              self._errHandler.sync(self)
              _la = self._input.LA(1)
              while _la == 10:
                  self.state = 326
                  self.match(AutolevParser.T__9)
                  self.state = 327
                  self.matrixInOutput()
                  self.state = 332
                  self._errHandler.sync(self)
                  _la = self._input.LA(1)
  
              self.state = 333
              self.match(AutolevParser.T__1)
  
          self.state = 337
          self.match(AutolevParser.ID)
          self.state = 338
          self.match(AutolevParser.T__19)
          self.state = 339
          self.match(AutolevParser.ID)
      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 26 for calling the AutolevParser obj's underlying member method code with example usage: obj.codegen() and returns: localctx