streamnative#386: Made c'tors private.

Author: objecttrouve

pulsar-flink-connector/src/main/java/org/apache/flink/streaming/connectors/pulsar/FlinkPulsarSink.java

@@ -139,7 +139,7 @@ public FlinkPulsarSink<T>  build(){
 
     private final PulsarSerializationSchema<T> serializationSchema;
 
-    public FlinkPulsarSink(final Builder<T> builder) {
+    private FlinkPulsarSink(final Builder<T> builder) {
         super(
             new FlinkPulsarSinkBase.Config<T>()
                 .withAdminUrl(builder.adminUrl)

pulsar-flink-connector/src/main/java/org/apache/flink/streaming/connectors/pulsar/FlinkPulsarSource.java

@@ -302,7 +302,7 @@ public FlinkPulsarSource<T> build(){
 
     private final CryptoKeyReader cryptoKeyReader;
 
-    public FlinkPulsarSource(final Builder<T> builder) {
+    private FlinkPulsarSource(final Builder<T> builder) {
         this.adminUrl = checkNotNull(builder.adminUrl);
         this.clientConfigurationData = checkNotNull(builder.clientConf);
         this.deserializer = builder.deserializer;