You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: user_piv_cac_setup_form.rb
    path of file: ./repos/identity-idp/app/forms
    
    the code of the file until where you have to start completion: class UserPivCacSetupForm
  inc
    
  def process_valid_submission
    user.piv_cac_configurations.create!(
      x509_dn_uuid: x509_dn_uuid,
      name: @name,
      x509_issuer: x509_issuer,
    )

    event = PushNotification::RecoveryInformationChangedEvent.new(user: user)
    PushNotification::HttpPush.deliver(event)
    true
  rescue PG::UniqueViolation
    self.error_type = 'piv_cac.already_associated'
    false
  end