Удяляем все модули, кроме core

core/build.gradle

@@ -1,4 +1,4 @@
-version '1.0-SNAPSHOT'
+version '0.1'
 
 apply plugin: 'maven'
 apply plugin: 'application'

core/src/main/java/mc/core/embedded/FakeServer.java

@@ -1,15 +1,15 @@
-/*
- * DmitriyMX <dimon550@gmail.com>
- * 2018-06-29
- */
 package mc.core.embedded;
 
+import lombok.extern.slf4j.Slf4j;
 import mc.core.network.Server;
 import mc.core.network.StartServerException;
 
+@Slf4j
 public class FakeServer implements Server {
+
     @Override
-    public void start() throws StartServerException {
+    public void start() {
+        log.info("Hello. I'm FakeServer. And i do nothing.");
     }
 
     @Override