public static func upload(multipartFormData: MultipartFormData,
to url: URLConvertible,
usingThreshold encodingMemoryThreshold: UInt64 = MultipartFormData.encodingMemoryThreshold,
method: HTTPMethod = .post,
headers: HTTPHeaders? = nil,
interceptor: RequestInterceptor? = nil,
fileManager: FileManager = .default) -> UploadRequest
public static func upload(multipartFormData:
@escaping (MultipartFormData) -> Void,
to url: URLConvertible,
usingThreshold encodingMemoryThreshold: UInt64 = MultipartFormData.encodingMemoryThreshold,
method: HTTPMethod = .post,
headers: HTTPHeaders? = nil,
interceptor: RequestInterceptor? = nil,
fileManager: FileManager = .defa