code: def matrixInOutput(self):
      localctx = AutolevParser.MatrixInOutputContext(
          self, self._ctx, self.state
      )
      self.enterRule(localctx, 30, self.RULE_matrixInOutput)
      self._la = 0  # Token type
      try:
          self.state = 268
          self._errHandler.sync(self)
          token = self._input.LA(1)
          if token in [48]:
              self.enterOuterAlt(localctx, 1)
              self.state = 260
              self.match(AutolevParser.ID)
  
              self.state = 261
              self.match(AutolevParser.ID)
              self.state = 262
              self.match(AutolevParser.T__2)
              self.state = 264
              self._errHandler.sync(self)
              _la = self._input.LA(1)
              if _la == 44 or _la == 45:
                  self.state = 263
                  _la = self._input.LA(1)
                  if not (_la == 44 or _la == 45):
                      self._errHandler.recoverInline(self)
                  else:
                      self._errHandler.reportMatch(self)
                      self.consume()
  
              pass
          elif token in [45]:
              self.enterOuterAlt(localctx, 2)
              self.state = 266
              self.match(AutolevParser.FLOAT)
              pass
          elif token in [44]:
              self.enterOuterAlt(localctx, 3)
              self.state = 267
              self.match(AutolevParser.INT)
              pass
          else:
              raise NoViableAltException(self)
  
      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 17 for calling the AutolevParser obj's underlying member method code with example usage: obj.matrixInOutput() and returns: localctx