Documentation for new contentTypeResolver option.
diff --git a/lib/src/static_handler.dart b/lib/src/static_handler.dart
index dd208c4..e70363a 100644
--- a/lib/src/static_handler.dart
+++ b/lib/src/static_handler.dart
@@ -32,6 +32,9 @@
///
/// If [useHeaderBytesForContentType] is `true`, the contents of the
/// file will be used along with the file path to determine the content type.
+///
+/// Specify a custom [contentTypeResolver] to customize automatic content type
+/// detection.
Handler createStaticHandler(String fileSystemPath,
{bool serveFilesOutsidePath: false,
String defaultDocument,
