Method debug

packages/utilities/src/logger.ts:33–35

(json: object)

    this.logger.warn(this.prefix + util.format('%j', json));
  }
  debug(json: object): void {
    this.logger.debug(this.prefix + util.format('%j', json));
  }
  setPrefix(prefix: string) {
    this.prefix = `[${prefix}] `;
  }