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798
require_versioned=True, want_unversioned=False):
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"""Generate an iterator of changes between trees.
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(file_id, (path_in_source, path_in_target),
803
changed_content, versioned, parent, name, kind,
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Changed_content is True if the file's content has changed. This
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804
includes changes to its kind, and to a symlink's target.