Get a ServiceNow attachment file's contents as a string (Global)

global.getAttachmentContentsAsString.js

var tableName = 'incident';
var recordID = '755d52b137b0b30090b68cf6c3990e6f';
gs.print(getAttachmentContentsAsString(tableName, recordID));

function getAttachmentContentsAsString(tableName, recordID) {
	//Declare a new instance of GlideSysAttachment.
	var gsa = new GlideSysAttachment();
	//Get the raw bytes in the file
	var bytesInFile = gsa.getBytes(tableName, recordID);
	//Convert that jive into a string using Java/Rhino.
	var dataAsString = Packages.java.lang.String(bytesInFile);
	//Re-convert to a string in Javascript, cause we don't trust Rhino.
	dataAsString = String(dataAsString);
	
	return dataAsString;
}