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export class TypeValidator {  static isNull(object: any): boolean {    return object === null;  }
  static isArray(object: any): boolean {    return Array.isArray(object);  }
  static isUndefined(object: any): boolean {    return object === undefined;  }
  static isObject(object: any): boolean {    return !this.isNull(object) && !this.isUndefined(object) && !this.isArray(object) && typeof object === "object";  }}