Add url-expression as an alternative to url for outbound
http adapters. One of url or url-expression must be
provided (but not both).
The Message is the root object for the expression's
evaluation context; the bean factory can also be
used to resolve '@beanName' expressions.
INT-2570 url-expression Reference Docs
Add note to the reference guide.
INT-2570 Polishing
PR Review Comments
INT-2570 Polishing
PR Review comments.
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