can be static

Author: breedx-splk

custom/src/test/java/com/splunk/opentelemetry/opamp/OpampActivatorTest.java

@@ -236,7 +236,7 @@ public void onMessage(OpampClient opampClient, MessageData messageData) {
     assertThat(agentToServer.agent_description.non_identifying_attributes).isEmpty();
   }
 
-  private Predicate<? super KeyValue> matching(String key, AnyValue... values) {
+  private static Predicate<? super KeyValue> matching(String key, AnyValue... values) {
     return kv -> kv.key.equals(key) && kv.value.equals(createArrayAttribute(values));
   }