How to use the @covalent/dynamic-forms.TdDynamicElement.Textarea function in @covalent/dynamic-forms

{
          validator: (control: AbstractControl) => {
            let isValid: boolean = control.value.length <= 2;
            return !isValid ? { invalidChips: true } : undefined;
          },
        },
      ],
    },
  ];

  elementOptions: any[] = [
    TdDynamicElement.Input,
    TdDynamicType.Number,
    TdDynamicElement.Datepicker,
    TdDynamicElement.Password,
    TdDynamicElement.Textarea,
    TdDynamicElement.Slider,
    TdDynamicElement.Checkbox,
    TdDynamicElement.SlideToggle,
    TdDynamicElement.FileInput,
  ];

  showDynamicCode: boolean = false;

  type: any;

  count: number = 2;

  customValidationElements: ITdDynamicElementConfig[] = [
    {
      name: 'evenElement',
      label: 'Even Number',

minLength: 4,
      maxLength: 12,
      flex: 50,
    },
    {
      name: 'text',
      type: TdDynamicType.Text,
      required: false,
      default: 'Default',
      flex: 50,
      disabled: true,
    },
    {
      name: 'textarea',
      hint: 'this is a textarea hint',
      type: TdDynamicElement.Textarea,
      required: false,
    },
    {
      name: 'required-password',
      label: 'Password Label',
      type: TdDynamicElement.Password,
      required: true,
    },
  ];

  numberElements: ITdDynamicElementConfig[] = [
    {
      name: 'number',
      label: 'Number',
      type: TdDynamicType.Number,
      required: true,

minLength: 4,
      maxLength: 12,
      flex: 50,
    },
    {
      name: 'text',
      type: TdDynamicType.Text,
      required: false,
      default: 'Default',
      flex: 50,
      disabled: true,
    },
    {
      name: 'textarea',
      hint: 'this is a textarea hint',
      type: TdDynamicElement.Textarea,
      required: false,
    },
    {
      name: 'required-password',
      label: 'Password Label',
      type: TdDynamicElement.Password,
      required: true,
    },
  ];

  numberElements: ITdDynamicElementConfig[] = [
    {
      name: 'number',
      label: 'Number',
      type: TdDynamicType.Number,
      required: true,

minLength: 4,
      maxLength: 12,
      flex: 50,
    },
    {
      name: 'text',
      type: TdDynamicType.Text,
      required: false,
      default: 'Default',
      flex: 50,
      disabled: true,
    },
    {
      name: 'textarea',
      hint: 'this is a textarea hint',
      type: TdDynamicElement.Textarea,
      required: false,
    },
    {
      name: 'required-password',
      label: 'Password Label',
      type: TdDynamicElement.Password,
      required: true,
    },
  ];
}

{
          validator: (control: AbstractControl) => {
            const isValid: boolean = control.value.length <= 2;
            return !isValid ? { invalidChips: true } : undefined;
          },
        },
      ],
    },
  ];

  elementOptions: any[] = [
    TdDynamicElement.Input,
    TdDynamicType.Number,
    TdDynamicElement.Datepicker,
    TdDynamicElement.Password,
    TdDynamicElement.Textarea,
    TdDynamicElement.Slider,
    TdDynamicElement.Checkbox,
    TdDynamicElement.SlideToggle,
    TdDynamicElement.FileInput,
  ];

  showDynamicCode: boolean = false;

  type: any;

  count: number = 2;

  customValidationElements: ITdDynamicElementConfig[] = [
    {
      name: 'evenElement',
      label: 'Even Number',