code: def numUniqueEmails(self, emails):
      """
      :type emails: List[str]
      :rtype: int
      """
      email_set = set()
      for email in emails:
          elements = email.split("@")
          email_set.add(
              elements[0].split("+")[0].replace(".", "") + elements[1]
          )
      return len(email_set)
  
label_desc: Use image node_id 1 for calling the Solution obj's underlying member method code with example usage: obj.numUniqueEmails(emails) and returns: len