[CM-1579]: Implemented example of text logging in the OnlineExperimentExample.

Author: yaricom

comet-examples/src/main/java/ml/comet/examples/BaseExample.java

@@ -24,6 +24,12 @@ interface BaseExample {
     String GRAPH_JSON_FILE = "graph.json";
     String CODE_FILE = "code_sample.py";
 
+    Map<String, Object> SOME_METADATA = new HashMap<String, Object>() {{
+        put("metaInt", 10);
+        put("metaString", "test");
+        put("metaBoolean", true);
+    }};
+
     static void generateCharts(OnlineExperiment experiment) {
         long currentStep = experiment.getStep();
 

comet-examples/src/main/java/ml/comet/examples/OnlineExperimentExample.java

@@ -71,6 +71,12 @@ private static void run(OnlineExperiment experiment) throws Exception {
         experiment.logParameter("batch_size", "500");
         experiment.logParameter("learning_rate", 12);
 
+        experiment.logText("Sample text",
+                ExperimentContext.builder()
+                        .withContext("train")
+                        .withStep(12).build(),
+                SOME_METADATA);
+
         // upload assets
         //
         experiment.uploadAsset(getResourceFile(CHART_IMAGE_FILE), "amazing chart.png", false);