code: public RunbookDraftUndoEditResultInner undoEdit(String resourceGroupName, String automationAccountName, String runbookName) {
          return undoEditWithServiceResponseAsync(resourceGroupName, automationAccountName, runbookName).toBlocking().single().body();
      }
docs: Undo draft edit to last known published state identified by runbook name.
  
  @param resourceGroupName Name of an Azure Resource group.
  @param automationAccountName The name of the automation account.
  @param runbookName The runbook name.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws ErrorResponseException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the RunbookDraftUndoEditResultInner object if successful.