--- a/mercurial/context.py	Tue Jul 04 23:13:47 2017 +0900
+++ b/mercurial/context.py	Tue Jul 04 22:35:52 2017 -0700
@@ -1879,6 +1879,12 @@
                 raise
             return (t, tz)
 
+    def exists(self):
+        return self._repo.wvfs.exists(self._path)
+
+    def lexists(self):
+        return self._repo.wvfs.lexists(self._path)
+
     def audit(self):
         return self._repo.wvfs.audit(self._path)