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-rw-r--r--lib/rubygems/test_utilities.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/rubygems/test_utilities.rb b/lib/rubygems/test_utilities.rb
index 69ff60d101..1a8fb5a0ad 100644
--- a/lib/rubygems/test_utilities.rb
+++ b/lib/rubygems/test_utilities.rb
@@ -139,6 +139,8 @@ end
##
# A StringIO duck-typed class that uses Tempfile instead of String as the
# backing store.
+#
+# This is available when rubygems/test_utilities is required.
#--
# This class was added to flush out problems in Rubinius' IO implementation.