some Prokka annotated genomes (new version) may not have the 'ontology_ref' key in 'ontology_events', change made to handle that scenario
some Prokka annotated genomes (new version) may not have the 'ontology_ref' key in 'ontology_events', change made to handle that scenario

kbase/genome_annotation_api,kbase/genome_annotation_api,kbase/genome_annotation_api