com.atlassian.confluence.importexport.resource
Interfaces 
DownloadResourceManager
DownloadResourceReader
DownloadResourceWriter
ResourceAccessor
WritableDownloadResourceManager
Classes 
AttachmentDownloadResourceManager
AttachmentDownloadResourceReader
DelegatorDownloadResourceManager
ExportDownloadResourceManager
FileDownloadResourceReader
FileDownloadResourceWriter
ServletContextResourceAccessor
ThumbnailDownloadResourceManager
ThumbnailDownloadResourceReader
WebImagesDownloadResourceManager
WebImagesDownloadResourceReader
Exceptions 
DownloadResourceNotFoundException
UnauthorizedDownloadResourceException