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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 _subfield_conflicts( conflicts, # type: List[Tuple[Tuple[str, str], List[Node], List[Node]]] response_name, # type: str ast1, # type: Node ast2, # type: Node ):
 """Given a series of Conflicts which occurred between two sub-fields, generate a single Conflict."""

    if conflicts:
        return (  # type: ignore
            (response_name, [conflict[0] for conflict in conflicts]),
            tuple(itertools.chain([ast1], *[conflict[1] for conflict in conflicts])),
            tuple(itertools.chain([ast2], *[conflict[2] for conflict in conflicts])),
        )
    return None