The document discusses three methods for staging files in Oracle WebCenter Content for processing by Oracle Fusion HCM File-Based Loader (FBL): 1) the File Import and Export interface, 2) the WebCenter Content Document Transfer Utility, and 3) Remote Intradoc Client (RIDC). It also provides details on invoking the LoaderIntegrationService web service to initiate loading and processing of staged files. Sample code is given for uploading files using RIDC and calling the LoaderIntegrationService.