* The way it's currently implemented -- ValidateActionForm conditionally branches to a separate chain on validation failure ("servlet-validation-failure" in the current config file), and [returns true to] abandon the remainder of the original chain.
The phrase "conditionally *nests* a separate chain" might be more accurate. Branch implies the Command loses control, which is not the case.
dictionary.com / Computer Science
branch - To relinquish control to another set of instructions or another routine as a result of the presence of a branch.
nest - A set of data contained sequentially within another.
-Ted.
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