export declare class CustomAdapterAttachmentUtil {
        static processInboundAttachment(dataRef?: string, providerChannelIdentityId?: string, appleProxyUrl?: string, preDownloadPath?: string, fetchAttachmentPath?: string, appleSourceId?: string, providerUserId?: string): string
        static processInteractiveData(dataRef?: string, providerChannelIdentityId?: string, appleProxyUrl?: string, preDownloadPath?: string, fetchAttachmentPath?: string, decodePath?: string, appleSourceId?: string): string
        static processOutboundAttachment(attachmentUrl?: string, appleProxyUrl?: string, preUploadPath?: string, appleSourceId?: string, conversationId?: string): Record<any, any>

}