X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Frhynodge%2FFilter.java;h=1906afa88af586dfe6c22e20b2f14d4d3058796b;hb=cf2f4441705f9a5941022fb0837d08c95a1d0633;hp=b175b48b0008808150a68c07e93149a363d31b48;hpb=6ec36ef950c23c135bf0e112d932c5b7068189b8;p=rhynodge.git

diff --git a/src/main/java/net/pterodactylus/rhynodge/Filter.java b/src/main/java/net/pterodactylus/rhynodge/Filter.java
index b175b48..1906afa 100644
--- a/src/main/java/net/pterodactylus/rhynodge/Filter.java
+++ b/src/main/java/net/pterodactylus/rhynodge/Filter.java
@@ -17,6 +17,8 @@
 
 package net.pterodactylus.rhynodge;
 
+import org.jetbrains.annotations.NotNull;
+
 /**
  * Defines a filter that runs between {@link Query}s and {@link Trigger}s and
  * can be used to convert a {@link State} into another {@link State}. This can
@@ -38,6 +40,7 @@ public interface Filter {
 	 *            The state to convert
 	 * @return The new state
 	 */
-	State filter(State state);
+	@NotNull
+	State filter(@NotNull State state);
 
 }