1 files changed, 20 insertions, 0 deletions
diff --git a/lib/gitlab/ci/config/entry/prefix.rb b/lib/gitlab/ci/config/entry/prefix.rb
new file mode 100644
index 00000000000..3244ad6d611
--- /dev/null
+++ b/lib/gitlab/ci/config/entry/prefix.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    class Config
+      module Entry
+        ##
+        # Entry that represents a key prefix.
+        #
+        class Prefix < ::Gitlab::Config::Entry::Node
+          include ::Gitlab::Config::Entry::Validatable
+
+          validations do
+            validates :config, key: true
+          end
+        end
+      end
+    end
+  end
+end