1325
1325
when determining "orphan" status - for a persistent object
1326
1326
it only detects an in-python de-association event to establish
1327
1327
the object as an "orphan". Next, the good news: to support
1329
1329
support one-to-many via an association table, a new flag
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1330
single_parent=True may be set which indicates objects
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1331
linked to the relation are only meant to have a single parent.