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

},
             {
               "label": "<",
               "value": "lt"
             },
             {
               "label": "<",
               "value": "le"
             }
           ],
           "flex" : 10
         };
         let nodeDS :ITdDynamicElementConfig = {
           "label": param.name + ' - '+param.documentation,
           "name" : param.type+'-'+seq + '-2-'+param.name ,
           "type": TdDynamicElement.Datepicker,
           "required": true,
           "flex" : 90
         };

         this.elements.push(nodeDSQ);
         this.elements.push(nodeDS);

         break;
       case 'token' :
         // add matches
         let nodeT1 :ITdDynamicElementConfig = {
           "label": 'System - '+param.name + ' - '+param.documentation,
           "name" : param.type+'-'+seq + '-1-'+param.name,
           "type": TdDynamicElement.Input,
           "flex" : 50
         };

isDate(type: TdDynamicElement | TdDynamicType): boolean {
    return type === TdDynamicElement.Datepicker;
  }

fileElements: ITdDynamicElementConfig[] = [
    {
      name: 'file-input',
      label: 'Browse a file',
      hint: 'this is a file input hint',
      type: TdDynamicElement.FileInput,
    },
  ];

  dateElements: ITdDynamicElementConfig[] = [
    {
      name: 'date-input',
      label: 'Select a date',
      hint: 'this is a datepicker hint',
      type: TdDynamicElement.Datepicker,
      min: new Date(2018, 1, 1).setHours(0, 0, 0, 0),
    },
  ];

  dynamicElements: ITdDynamicElementConfig[] = [
    {
      name: 'element-0',
      type: TdDynamicType.Text,
      required: true,
      flex: 80,
    },
    {
      name: 'element-1',
      type: TdDynamicType.Number,
      required: false,
      max: 30,

isDate(type: TdDynamicElement | TdDynamicType): boolean {
    return type === TdDynamicElement.Datepicker;
  }

flex: 100,
      validators: [
        {
          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[] = [
    {

fileElements: ITdDynamicElementConfig[] = [
    {
      name: 'file-input',
      label: 'Browse a file',
      hint: 'this is a file input hint',
      type: TdDynamicElement.FileInput,
    },
  ];

  dateElements: ITdDynamicElementConfig[] = [
    {
      name: 'date-input',
      label: 'Select a date',
      hint: 'this is a datepicker hint',
      type: TdDynamicElement.Datepicker,
      min: new Date(2018, 1, 1).setHours(0, 0, 0, 0),
    },
  ];

  dynamicElements: ITdDynamicElementConfig[] = [
    {
      name: 'element-0',
      type: TdDynamicType.Text,
      required: true,
      flex: 80,
    },
    {
      name: 'element-1',
      type: TdDynamicType.Number,
      required: false,
      max: 30,

flex: 100,
      validators: [
        {
          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[] = [
    {