Use FileIterator for BioImagesAPI and DiscoverLife_KeysAPI.
Use FileIterator for FishBaseAPI and DiscoverLifeAPI, other code maintenance.
Use FileIterator for ObisAPI and MCZHarvardAPI, other code maintenance.
Use FileIterator for TropicosAPI and SouthAfricanVertebratesAPI, and other code maintenance.
Use FileIterator for WormsAPI and code maintenance.