Returns the contents of an XML file as a string.
Your cannot use standard parameterization with this function.
String.lr.read_xml( String file_name);
|Example: lr.read_xml||String and Parameter Functions|
|file_name||The file to read and return as a string. The file must exist in the
The lr.read_xml function returns the contents of the specified file as a String. If the call fails, it returns null.