text: function ValidationError(message, offendingProperty) {
      this.message = message;
      this.stack = new Error().stack;
      this.statusCode = 422;
      if (offendingProperty) {
          this.property = offendingProperty;
      }
      this.errorType = this.name;
  }
  
  ValidationError.prototype = Object.create(Error.prototype);
  ValidationError.prototype.name = 'ValidationError';
  
  module.exports = ValidationError;
  