What would be an example template syntax usage of this custom pipe?

@Pipe({ name: 'truncate' })
export class TruncatePipe implements PipeTransform {
  transform(value: string, maxLength: number, showEllipsis: boolean) {
    const newValue = maxLength ? value.substr(0, maxLength) : value;
    return showEllipsis ? '${newValue}...' : newValue;
  }
}