Use Function.identity() instead

Author: joegallo

server/src/main/java/org/elasticsearch/ingest/IngestStats.java

@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
+import java.util.function.Function;
 
 public record IngestStats(Stats totalStats, List<PipelineStat> pipelineStats, Map<String, List<ProcessorStat>> processorStats)
     implements
@@ -82,8 +83,8 @@ public static IngestStats read(StreamInput in) throws IOException {
                 var processorType = in.readString();
                 var processorStat = readStats(in);
                 // pass these name and type through the local names and types cache to canonical-ize them
-                processorName = namesAndTypesCache.computeIfAbsent(processorName, k -> k);
-                processorType = namesAndTypesCache.computeIfAbsent(processorType, k -> k);
+                processorName = namesAndTypesCache.computeIfAbsent(processorName, Function.identity());
+                processorType = namesAndTypesCache.computeIfAbsent(processorType, Function.identity());
                 processorStatsPerPipeline.add(new ProcessorStat(processorName, processorType, processorStat));
             }
             processorStats.put(pipelineId, Collections.unmodifiableList(processorStatsPerPipeline));