code: def serial(self):
      index = self.index
      expressions = []
      while len(expressions) == 0 or self.token(">"):
          e = self.expression()
          if not e:
              break
          expressions.append(e)
  
      if len(expressions) >= 2:
          return SerialPattern(expressions)
      self.index = index
  
imports: import re
label_desc: Use image node_id 4 for calling the GEParser obj's underlying member method code with example usage: obj.serial() and returns: SerialPattern