src/google/appengine/datastore/cloud_datastore_validator.py [307:330]:
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    absent_key_allowed=False,
    incomplete_key_path_allowed=False,
    complete_key_path_allowed=True,
    reserved_key_allowed=False,
    reserved_property_name_allowed=False,
    meaning_index_only_allowed=False)


WRITE_ENTITY_IN_VALUE = _ValidationConstraint(
    absent_key_allowed=True,
    incomplete_key_path_allowed=True,
    complete_key_path_allowed=True,
    reserved_key_allowed=True,
    reserved_property_name_allowed=False,
    meaning_index_only_allowed=False)


ALLOCATE_KEY_ID = _ValidationConstraint(
    absent_key_allowed=False,
    incomplete_key_path_allowed=True,
    complete_key_path_allowed=False,
    reserved_key_allowed=False,
    reserved_property_name_allowed=False,
    meaning_index_only_allowed=False)
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src/google/appengine/datastore/datastore_v4_validator.py [292:315]:
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    absent_key_allowed=False,
    incomplete_key_path_allowed=False,
    complete_key_path_allowed=True,
    reserved_key_allowed=False,
    reserved_property_name_allowed=False,
    meaning_index_only_allowed=False)


WRITE_ENTITY_IN_VALUE = _ValidationConstraint(
    absent_key_allowed=True,
    incomplete_key_path_allowed=True,
    complete_key_path_allowed=True,
    reserved_key_allowed=True,
    reserved_property_name_allowed=False,
    meaning_index_only_allowed=False)


ALLOCATE_KEY_ID = _ValidationConstraint(
    absent_key_allowed=False,
    incomplete_key_path_allowed=True,
    complete_key_path_allowed=False,
    reserved_key_allowed=False,
    reserved_property_name_allowed=False,
    meaning_index_only_allowed=False)
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