code: def expr_sempred(self, localctx: ExprContext, predIndex: int):
      if predIndex == 0:
          return self.precpred(self._ctx, 16)
  
      if predIndex == 1:
          return self.precpred(self._ctx, 15)
  
      if predIndex == 2:
          return self.precpred(self._ctx, 14)
  
      if predIndex == 3:
          return self.precpred(self._ctx, 3)
  
      if predIndex == 4:
          return self.precpred(self._ctx, 2)
  
imports: from antlr4 import *
  from io import StringIO
  import sys
label_desc: Use image node_id 31 for calling the AutolevParser obj's underlying member method code with example usage: obj.expr_sempred(localctx, predIndex) and returns: self, self, self, self, self