def segment_allocation_range_populate_bulk(context, sa_dicts):
context.session.bulk_insert_mappings(<EOL>models.SegmentAllocation,<EOL>sa_dicts<EOL>)<EOL>
Bulk-insert deallocated segment allocations.

    NOTE(morgabra): This is quite performant when populating large ranges,
    but you don't get any ORM conveniences or protections here.