{"type": "object", "properties": {"guest_additions_path": {"type": "string"}, "iso_url": {"type": "string"}, "hard_driver_discard": {"type": "boolean"}, "output_filename": {"type": "string"}, "nvme_port_count": {"type": "integer"}, "http_port_max": {"type": "integer"}, "http_directory": {"type": "string"}, "guest_additions_url": {"type": "string"}, "keep_registered": {"type": "boolean"}, "iso_checksum": {"type": "string"}, "http_port_min": {"type": "integer"}, "guest_additions_interface": {"type": "string"}, "iso_urls": {"items": {"type": "string"}, "type": "array"}, "hard_drive_nonrotational": {"type": "boolean"}, "type": {"const": "virtualbox-iso"}, "hard_drive_interface": {"type": "string"}, "vm_name": {"type": "string"}, "guest_additions_sha256": {"type": "string"}, "format": {"type": "string"}, "export_opts": {"items": {"type": "string"}, "type": "array"}, "output_directory": {"type": "string"}, "virtualbox_version_file": {"type": "string"}, "iso_target_path": {"type": "string"}, "shutdown_command": {"type": "string"}, "communicator": {"type": "string"}, "skip_export": {"type": "boolean"}, "http_bind_address": {"type": "integer"}, "disk_size": {"type": "integer"}, "guest_os_type": {"type": "string"}, "iso_interface": {"type": "string"}, "sata_port_count": {"type": "integer"}, "bundle_iso": {"type": "boolean"}, "headless": {"type": "boolean"}, "guest_additions_mode": {"type": "string"}, "iso_target_extension": {"type": "string"}}}