The analysis began by examining the provided vulnerability information, which included a description, a proof-of-concept (POC), and a link to a fixing commit. The commit URL was used with the get_commit_infos tool to retrieve the patch details. The patch showed modifications to the RemoveChunk function within the server/api/v1/example/exa_breakpoint_continue.go file. The vulnerability description and the POC clearly indicate that the fileMd5 parameter is the vector for a path traversal attack. The code of the RemoveChunk function confirms that it reads the fileMd5 from the user's request and passes it to a utility function utils.RemoveChunk for deletion, without any validation in the vulnerable version. The patch adds a path traversal check, which, despite appearing to check the wrong field (file.FilePath instead of file.FileMd5 as suggested by the POC), confirms that RemoveChunk is the function where the vulnerability is located and was intended to be fixed. Therefore, FileUploadAndDownloadApi.RemoveChunk is identified as the vulnerable function.