Deprecate waitKey and expose client

EtcdConnector/src/main/java/eu/mikroskeem/utils/etcdconnector/EtcdConnector.java

@@ -1,5 +1,6 @@
 package eu.mikroskeem.utils.etcdconnector;
 
+import mousio.etcd4j.EtcdClient;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -73,8 +74,18 @@ public interface EtcdConnector {
     /**
      * Waits for key change
      *
+     * Deprecated: it is broken, literally
+     *
      * @param path Key path
      * @param callback Callback to run
      */
+    @Deprecated
     void waitKey(@NotNull String path, @NotNull Function<Object,Void> callback);
+
+    /**
+     * Get client instance
+     *
+     * @return Etcd client instance
+     */
+    EtcdClient getClient();
 }

EtcdConnector/src/main/java/eu/mikroskeem/utils/etcdconnector/EtcdConnectorBase.java

@@ -166,4 +166,8 @@ abstract class EtcdConnectorBase implements EtcdConnector {
             e.printStackTrace();
         }
     }
+
+    public EtcdClient getClient() {
+        return etcdClient;
+    }
 }