add tests

exporters/common/src/main/java/io/opentelemetry/exporter/internal/marshal/Marshaler.java

@@ -34,7 +34,6 @@ public final void writeJsonWithoutCloseTo(OutputStream output) throws IOExceptio
     try (JsonSerializer serializer = new JsonSerializer(generator)) {
       serializer.writeMessageValue(this);
     }
-    ;
   }
 
   /** Marshals into the {@link OutputStream} in proto JSON format. */

exporters/logging-otlp/src/test/java/io/opentelemetry/exporter/logging/otlp/internal/writer/StreamJsonWriterTest.java

@@ -45,7 +45,9 @@ void testToString() throws IOException {
   @Test
   void errorWriting() throws IOException {
     Marshaler marshaler = mock(Marshaler.class);
-    Mockito.doThrow(new IOException("test")).when(marshaler).writeJsonTo(any(OutputStream.class));
+    Mockito.doThrow(new IOException("test"))
+        .when(marshaler)
+        .writeJsonWithoutCloseTo(any(OutputStream.class));
 
     StreamJsonWriter writer = new StreamJsonWriter(System.out, "type");
     writer.write(marshaler);