MetaDefender Core V4 v4.19.2 ... 8. MetaDefender Core Developer Guide 8.1. MetaDefender API 8.1.4. Processing files in batch 8.1.4.1 Initiate Batch 8.1.4.2. Scan file in batch 8.1.4.3. Status of Batch 8.1.4.4. Close Batch 8.1.4.5. Download Batch Signed Result 8.1.4.6. Cancel Batch