code: function verifyArguments(args) {
  	const isInvalid = args.some((arg) => typeof arg !== 'string');
  	if (isInvalid) {
  		const argsString = args.map((arg) => util.format('%j', arg)).join(', ');
  		const msg = util.format('Transaction arguments must be strings: %s', argsString);
  		logger.error('verifyArguments:', msg);
  		throw new Error(msg);
  	}
  }
docs: Ensure supplied transaction arguments are not strings.
  @private
  @static
  @param {Array} args transaction arguments.
  @throws {Error} if any arguments are invalid.