From 48f859f5d4557bbb6fbdda14bb7d91c8df490756 Mon Sep 17 00:00:00 2001
From: meejah <meejah@meejah.ca>
Date: Fri, 31 Jan 2020 04:30:37 -0700
Subject: [PATCH] document internal callback

---
 src/allmydata/test/cli/test_cli.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/allmydata/test/cli/test_cli.py b/src/allmydata/test/cli/test_cli.py
index 9b300afd5..1e77325bb 100644
--- a/src/allmydata/test/cli/test_cli.py
+++ b/src/allmydata/test/cli/test_cli.py
@@ -911,7 +911,13 @@ class Mkdir(GridTestMixin, CLITestMixin, unittest.TestCase):
             self.failUnlessReallyEqual(err, "")
             self.failUnlessIn(st, out)
             return out
+
         def _mkdir(ign, mutable_type, uri_prefix, dirname):
+            """
+            :param str mutable_type: 'sdmf' or 'mdmf' (or uppercase versions)
+            :param str uri_prefix: kind of URI
+            :param str dirname: the directory alias
+            """
             d2 = self.do_cli("mkdir", "--format={}".format(mutable_type), dirname)
             d2.addCallback(_check, uri_prefix)
             def _stash_filecap(cap):