code: def isClientCert(self, name):
          '''
          Checks if a user client certificate (PKCS12) exists.
  
          Args:
              name (str): The name of the user keypair.
  
          Examples:
              Check if the client certificate "myuser" exists:
  
                  exists = cdir.isClientCert('myuser')
  
          Returns:
              bool: True if the certificate is present, False otherwise.
          '''
          crtpath = self._getPathJoin('users', '%s.p12' % name)
          return os.path.isfile(crtpathf isClientCert(self, name):
          '''
          Checks if a user client certificate (PKCS12) exists.
  
          Args:
              name (str): The name of the user keypair.
  
          Examples:
              Check if the client certificate "myuser" exists:
  
                  exists = cdir.isClientCert('myuser')
  
          Returns:
              bool: True if the certificate is present, False otherwise.
          '''
          crtpath = self._getPathJoin('users', '%s.p12' % name)
          return os.path.isfile(crtpath)
docs: Checks if a user client certificate (PKCS12) exists.
  
          Args:
              name (str): The name of the user keypair.
  
          Examples:
              Check if the client certificate "myuser" exists:
  
                  exists = cdir.isClientCert('myuser')
  
          Returns:
              bool: True if the certificate is present, False otherwise.