--- /dev/null
+# http\Env\Response http\Env\Response::setLastModified(int $last_modified)
+
+Set a custom last modified time stamp.
+
+> **Note:** This will be used for caching and pre-condition checks.
+
+## Params:
+
+* int $last_modified
+ A unix timestamp.
+
+## Returns:
+
+* http\Env\Response, self.