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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _instantiate_remote_sources(self, kwargs):
 """For RemoteSources target, convert "dest" field to its real target type."""

    kwargs['dest'] = _DestWrapper((self._target_types[kwargs['dest']],))
    return RemoteSources(build_graph=self, **kwargs)