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-rw-r--r--kernel/univ.mli1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/univ.mli b/kernel/univ.mli
index d7ee3ecee..dc6fb85a0 100644
--- a/kernel/univ.mli
+++ b/kernel/univ.mli
@@ -320,6 +320,7 @@ sig
type t
val empty : t
+ val is_empty : t -> bool
val instance : t -> Instance.t