Annotate Filter interface with @NotNull

[rhynodge.git] / src / main / java / net / pterodactylus / rhynodge / filters / ComicSiteFilter.java

diff --git a/src/main/java/net/pterodactylus/rhynodge/filters/ComicSiteFilter.java b/src/main/java/net/pterodactylus/rhynodge/filters/ComicSiteFilter.java
index 39da74d..19286a6 100644 (file)
--- a/src/main/java/net/pterodactylus/rhynodge/filters/ComicSiteFilter.java
+++ b/src/main/java/net/pterodactylus/rhynodge/filters/ComicSiteFilter.java
@@ -32,6 +32,7 @@ import net.pterodactylus.rhynodge.states.FailedState;
 import net.pterodactylus.rhynodge.states.HtmlState;
 
 import com.google.common.base.Optional;
+import org.jetbrains.annotations.NotNull;
 import org.jsoup.nodes.Document;
 
 /**
@@ -42,8 +43,9 @@ import org.jsoup.nodes.Document;
  */
 public abstract class ComicSiteFilter implements Filter {
 
+       @NotNull
        @Override
-       public State filter(State state) {
+       public State filter(@NotNull State state) {
                checkArgument(state instanceof HtmlState, "state must be an HTML state");
 
                /* initialize states: */