ngx-datatable -如何在运行时为列定义“单元格类”

<ngx-datatable [rows]="data" [columns]="columns"></ngx-datatable>

import { Component } from '@angular/core';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent {
  data = [
    { name: 'John', age: 25 },
    { name: 'Jane', age: 30 },
    { name: 'Bob', age: 35 }
  ];

  columns = [
    { prop: 'name', name: 'Name', cellClass: 'name-cell' },
    { prop: 'age', name: 'Age', cellClass: 'age-cell' }
  ];
}

.name-cell {
  color: blue;
}

.age-cell {
  font-weight: bold;
}