Fix doc + missing licence header

Author: SylvainJuge

CHANGELOG.asciidoc

@@ -58,9 +58,6 @@ endif::[]
 ===== Refactors
 * Migrate some plugins to indy dispatcher {pull}1405[#1405] {pull}1394[#1394]
 
-[[release-notes-1.x]]
-=== Java Agent version 1.x
-
 [[release-notes-1.19.0]]
 ==== 1.19.0 - 2020/11/10
 

apm-agent-plugin-sdk/src/main/java/co/elastic/apm/agent/sdk/weakmap/NullCheck.java

@@ -1,3 +1,27 @@
+/*-
+ * #%L
+ * Elastic APM Java agent
+ * %%
+ * Copyright (C) 2018 - 2021 Elastic and contributors
+ * %%
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * #L%
+ */
 package co.elastic.apm.agent.sdk.weakmap;
 
 import org.slf4j.Logger;
@@ -28,7 +52,7 @@ private static <T> boolean isNull(@Nullable T v, boolean isKey) {
         return true;
     }
 
-    public static <T> boolean isNullKey(@Nullable T key){
+    public static <T> boolean isNullKey(@Nullable T key) {
         return isNull(key, true);
     }
 

apm-agent-plugin-sdk/src/main/java/co/elastic/apm/agent/sdk/weakmap/NullSafeWeakConcurrentSet.java

@@ -1,3 +1,27 @@
+/*-
+ * #%L
+ * Elastic APM Java agent
+ * %%
+ * Copyright (C) 2018 - 2021 Elastic and contributors
+ * %%
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * #L%
+ */
 package co.elastic.apm.agent.sdk.weakmap;
 
 import com.blogspot.mydailyjava.weaklockfree.WeakConcurrentSet;
@@ -17,23 +41,23 @@ public NullSafeWeakConcurrentSet(Cleaner cleaner) {
 
     @Override
     public boolean add(V value) {
-        if(isNullValue(value)){
+        if (isNullValue(value)) {
             return false;
         }
         return super.add(value);
     }
 
     @Override
     public boolean contains(V value) {
-        if(isNullValue(value)){
+        if (isNullValue(value)) {
             return false;
         }
         return super.contains(value);
     }
 
     @Override
     public boolean remove(V value) {
-        if(isNullValue(value)){
+        if (isNullValue(value)) {
             return false;
         }
         return super.remove(value);

apm-agent-plugin-sdk/src/test/java/co/elastic/apm/agent/sdk/state/GlobalThreadLocalTest.java

@@ -1,3 +1,27 @@
+/*-
+ * #%L
+ * Elastic APM Java agent
+ * %%
+ * Copyright (C) 2018 - 2021 Elastic and contributors
+ * %%
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * #L%
+ */
 package co.elastic.apm.agent.sdk.state;
 
 import org.junit.jupiter.api.Test;

apm-agent-plugin-sdk/src/test/java/co/elastic/apm/agent/sdk/weakmap/NullSafeWeakConcurrentSetTest.java

@@ -1,3 +1,27 @@
+/*-
+ * #%L
+ * Elastic APM Java agent
+ * %%
+ * Copyright (C) 2018 - 2021 Elastic and contributors
+ * %%
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * #L%
+ */
 package co.elastic.apm.agent.sdk.weakmap;
 
 import com.blogspot.mydailyjava.weaklockfree.WeakConcurrentSet;