<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def maybe_coroutine(obj):
 """ If 'obj' is a coroutine and we're using Python3, wrap it in ensureDeferred. Otherwise return the original object. (This is to insert in all callback chains from user code, in case that user code is Python3 and used 'async def') """

    if six.PY3 and asyncio.iscoroutine(obj):
        return defer.ensureDeferred(obj)
    return obj