/**
 * Serializer for invoking external proxy endpoints.
 *
 * For multipart file uploads, send the file as a standard multipart form field
 * (e.g., 'file' field) alongside the JSON body. Files are extracted from
 * request.FILES and forwarded to the upstream service.
 *
 * Example multipart request:
 * - Form field 'body': JSON string with request body
 * - Form field 'path_params': JSON string with path parameters
 * - Form field 'query': JSON string with query parameters
 * - Form field 'file': The binary file to upload
 */
export type ExternalProxyInvoke = {
    body?: any;
    query?: Record<string, string>;
    headers?: Record<string, string>;
    path_params?: Record<string, string>;
};