问如何动态填充列智能表Angular 9？

EN

settings = {
add: {
  addButtonContent: '<i class="nb-plus"></i>',
  createButtonContent: '<i class="nb-checkmark"></i>',
  cancelButtonContent: '<i class="nb-close"></i>',
  confirmCreate: true,
},
edit: {
  editButtonContent: '<i class="nb-edit"></i>',
  saveButtonContent: '<i class="nb-checkmark"></i>',
  cancelButtonContent: '<i class="nb-close"></i>',
  confirmSave: true,
},
delete: {
  deleteButtonContent: '<i class="nb-trash"></i>',
  confirmDelete: true,
},
columns: {
  
  identifier: {
    title: 'Steam',
    type: 'string',
  },
  license: {
    title: 'Licencias',
    type: 'string',
  },
  money: {
    title: 'Dinero',
    type: 'number',
  },
  name: {
    title: 'Nombre',
    type: 'string',
  },
  group: {
    title: 'Trabajo',
    type: 'string',
  },
},

source: LocalDataSource = new LocalDataSource();
constructor(private tjUsuarioService: TjususariosService) {
this.tjUsuarioService.UsuariosListado().subscribe(
  
  res => {
    this.usuarios = res;
    
    this.settings = Object.assign({}, this.settings);
    this.source.load(this.usuarios);
    
    console.log(res)
  },
  err => console.log(err),

);