Better lambdas.
diff --git a/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraph.java b/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraph.java
index f62e10a..ecad3a2 100644
--- a/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraph.java
+++ b/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraph.java
@@ -58,7 +58,7 @@
 
     @Override
     public void clear() {
-        filteredGraphs(graphName).forEach(l -> l.clear());
+        filteredGraphs(graphName).forEach(List::clear);
     }
 
     @Override
diff --git a/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraphLike.java b/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraphLike.java
index ce4b640..3bd1a28 100644
--- a/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraphLike.java
+++ b/commons-rdf-jsonld-java/src/main/java/org/apache/commons/rdf/jsonldjava/JsonLdGraphLike.java
@@ -129,7 +129,7 @@
 
     @Override
     public void clear() {
-        filteredGraphs(null).forEach(s -> s.clear());
+        filteredGraphs(null).forEach(List::clear);
         // In theory we could use
         // rdfDataSet.clear();
         // but then we would need to also do