hunk.code_window: import { IsDefined, IsEnum, IsMongoId, IsOptional, ValidateNested } from 'class-validator';
   import { ChannelTypeEnum, IEmailBlock } from '@novu/shared';
   import { CommandHelper } from '../../../shared/commands/command.helper';
   import { EnvironmentWithUserCommand } from '../../../shared/commands/project.command';
   import { ChannelCTACommand } from '../../../notification-template/usecases/create-notification-template';
  
hunk.labels: replace keep keep keep keep keep
hunk.after_edit: import { IsDefined, IsEnum, IsMongoId, IsOptional, IsString, ValidateNested } from 'class-validator';
  
hunk.file_path: apps/api/src/app/message-template/usecases/create-message-template/create-message-template.command.ts
hunk.type: replace
file: import { Injectable } from '@nestjs/common';
  
  @Injectable()
  export class AppService {
    getHello(): string {
      return 'Hello World!';
    }
  }
  