unescapeXml
Description: This function unescapes a string containing XML entity escapes to a string containing the actual Unicode characters corresponding to the escapes. Supports only the five basic XML entities (gt, lt, quot, amp, apos).
Subject Type: String
Arguments: No arguments
Return Type: String
Examples: If the "message" attribute is '"bread" & "butter"', then the Expression ${message:unescapeXml()}
will return '"bread" & "butter"'