@interface QLBasePreviewParts : QLPreviewConverterParts + (BOOL)canConvertDocumentType:(id)a0; + (void /* function */ *)dataCallbackForUTI:(id)a0 andSize:(unsigned long long)a1; + (BOOL)isBundleURL:(id)a0; + (void /* function */ *)urlCallbackForUTI:(id)a0; - (void)computePreview; @end