code: func (r User_Customer_External_Binding_Phone) GetAllAuthenticationPinModes(authenticationModeKeyName *string) (resp []string, err error) {
  	params := []interface{}{
  		authenticationModeKeyName,
  	}
  	err = r.Session.DoRequest("SoftLayer_User_Customer_External_Binding_Phone", "getAllAuthenticationPinModes", params, &r.Options, &resp)
  	return
  }
docs: // This service returns key names of all available authentication modes. Refer to [[SoftLayer_User_Customer_External_Binding_Phone::getAllAuthenticationModes|getAllAuthenticationModes]] to retrieve authentication mode key names.