add getMap and isMap in Config

src/main/java/cn/nukkit/utils/Config.java

@@ -351,6 +351,18 @@ public List getList(String key, List defaultList) {
     public boolean isList(String key) {
         return config.isList(key);
     }
+
+    public Map getMap(String key) {
+        return this.getMap(key, null);
+    }
+
+    public Map getMap(String key, List defaultList) {
+        return this.correct ? this.config.getMap(key, defaultList) : defaultList;
+    }
+
+    public boolean isMap(String key) {
+        return config.isMap(key);
+    }
 
     public List<String> getStringList(String key) {
         return config.getStringList(key);

src/main/java/cn/nukkit/utils/ConfigSection.java

@@ -377,7 +377,41 @@ public boolean isList(String key) {
         Object val = get(key);
         return val instanceof List;
     }
+
+    /**
+     * Get Map value of config section element
+     *
+     * @param key - key (inside) current section
+     * @return
+     */
+    public Map getMap(String key) {
+        return this.getMap(key, null);
+    }
+
+    /**
+     * Get Map value of config section element
+     *
+     * @param key         - key (inside) current section
+     * @param defaultList - default value that will returned if section element is not exists
+     * @return
+     */
+    public Map getMap(String key, List defaultList) {
+        return (Map) this.get(key, defaultList);
+    }
+
+    /**
+     * Check type of section element defined by key. Return true this element is Map
+     *
+     * @param key
+     * @return
+     */
+    public boolean isMap(String key) {
+        Object val = get(key);
+        return val instanceof Map;
+    }
 
+
+
     /**
      * Get String List value of config section element
      *
@@ -737,4 +771,4 @@ public Set<String> getKeys(boolean child) {
     public Set<String> getKeys() {
         return this.getKeys(true);
     }
-}
+}