ComposedMethod is NOT a synonym for ExtractMethod. The pattern is "Divide your program into methods that perform one identifiable task. Keep all of the operations in a method at the same level of abstraction. This will naturally result in programs with many small methods, each a few lines long."
So the key difference is keeping all the operations in a method at the same level of abstraction? I can see where that might involve more than just a simple method refactoring. You might even generate whole new classes. see also: MethodObject
ComposedMethod then would be what you have after the code has been refactored mercilously, whether the refactorings are ExtractMethod, ExtractClass, something else or some combination thereof.
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