Execute entity transformers
Executes one or more entity transformers in sequence.
Lets you use entity transformers in a place that normally only accepts a regular data transformer. Some features, such as an HTTP proxy step, only offer a single data transformer slot, while a few transformations are built to work on whole entities instead. This feature bridges that gap: you drop it into the data transformer slot, add the entity transformers you need inside it, and it runs them in order on the current item. When they finish, it hands the result back as a single entity so the rest of your flow continues normally. It expects exactly one entity to come back out; if a step removes the item or produces more than one, it stops with an error.