**Workflow for preprocessing a reference file. **

Steps: -When a GenBank file is not provided, it is downloaded from NCBI based on a accession number. -When multiple plasmid GenBank files are provided, they are merged into one file. -When any amount of plasmid GenBank files are provided, the reference is merged with the plasmid GenBank file(s) into one file. A FASTA file is also extracted. -When no plasmid Genbank files are provided, a FASTA file is extracted from the reference GenBank file. -A ...