Parenthesis () Syntax
You can use this syntax in business rules and in DTL transformations.
To use parenthesis syntax to access a virtual property, use the following syntax:
message is a variable that refers to the current message. The name of this variable depends upon the context.
multi-valued-property-path is a virtual property path that uses the repeating field shortcut () to iterate through every instance of a repeating field, as described earlier in this reference.
The preceding syntax is equivalent to the following method call:
If the syntax returns multiple values a, b, and c, they appear in a single string enclosed in <> angle brackets, like this: