diff --git a/src/main/java/org/auioc/mcmod/arnicalib/base/function/VoidPredicate.java b/src/main/java/org/auioc/mcmod/arnicalib/base/function/VoidPredicate.java
new file mode 100644
index 00000000..6f64c858
--- /dev/null
+++ b/src/main/java/org/auioc/mcmod/arnicalib/base/function/VoidPredicate.java
@@ -0,0 +1,8 @@
+package org.auioc.mcmod.arnicalib.base.function;
+
+@FunctionalInterface
+public interface VoidPredicate {
+
+    boolean test();
+
+}