fixup: use get_ to imply inference of a new field from an existing field

set_* is usually used to set a value in an existing field, use get_*
to imply inference of a new field from an existing field.

ingest/bin/infer-dengue-serotype.py

@@ -24,7 +24,7 @@ def parse_args():
     return parser.parse_args()
 
 
-def _set_dengue_serotype(record, col="virus_tax_id"):
+def _get_dengue_serotype(record, col="virus_tax_id"):
     """Set dengue serotype from virus_tax_id"""
     dengue_types = {
         "11053": "denv1",
@@ -44,7 +44,7 @@ def main():
 
     for record in stdin:
         record = json.loads(record)
-        record[args.out_col] = _set_dengue_serotype(record, col=args.virus_tax_id)
+        record[args.out_col] = _get_dengue_serotype(record, col=args.virus_tax_id)
         stdout.write(json.dumps(record) + "\n")