
    <nz-flex nzVertical nzGap="small">
      <nz-cascader [nzOptions]="nzOptions" nzSuffixIcon="smile"></nz-cascader>
      <nz-cascader [nzOptions]="nzOptions" nzExpandIcon="smile"></nz-cascader>
      <nz-cascader [nzOptions]="nzOptions" [nzPrefix]="smile"></nz-cascader>
    </nz-flex>
    <ng-template #smile><nz-icon nzType="smile" /></ng-template>
  