How to use the aurelia-validation.ValidationRules.off function in aurelia-validation

private resetDiagramRenaming(): void {
    // Remove all used event listeners.
    document.removeEventListener('click', this.onRenameDiagramClickEvent);
    document.removeEventListener('keyup', this.onRenameDiagramKeyupEvent);

    // Reset input field.
    this.diagramRenamingState.currentDiagramInputValue = '';
    this.renameDiagramInput.value = '';
    // Hide input field.
    this.currentlyRenamingDiagram = null;

    ValidationRules.off(this.diagramRenamingState);
  }

private resetDiagramCreation(): void {
    // Remove all used event listeners.
    document.removeEventListener('click', this.onCreateNewDiagramClickEvent);
    document.removeEventListener('keyup', this.onCreateNewDiagramKeyupEvent);

    // Reset input field.
    this.diagramCreationState.currentDiagramInputValue = '';
    this.createNewDiagramInput.value = '';
    // Hide input field.
    this.diagramCreationState.isCreateDiagramInputShown = false;

    ValidationRules.off(this.diagramCreationState);
  }

private _resetDiagramCreation(solution: IViewModelSolution): void {
    // Remove all used event listeners.
    solution.documentEventHandlers.forEach((eventHandler: (event: any) => any, eventName: string): void => {
      document.removeEventListener(eventName, eventHandler);
    });
    solution.documentEventHandlers = new Map();

    // Reset input field.
    solution.currentDiagramInputValue = '';
    solution.createNewDiagramInput.value = '';
    // Hide input field.
    solution.isCreateDiagramInputShown = false;

    ValidationRules.off(solution);
  }