Github user ajs6f commented on the pull request:
https://github.com/apache/jena/pull/72#issuecomment-107519784
`Iter` is also a good choice because it provides access to
transform-behavior as well as many other forms of iterator-processing.
`Map1Iterator` is more of an "implementation" class. As the code evolves, I
would expect `Iter` to last longer and be better supported.
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