--- dynmap-orig/DynmapCore/src/main/java/org/dynmap/common/DynmapServerInterface.java	2019-06-05 00:35:46.000000000 +0200
+++ dynmap/DynmapCore/src/main/java/org/dynmap/common/DynmapServerInterface.java	2019-06-04 23:03:41.000000000 +0200
@@ -170,6 +170,17 @@
     }
 
     /**
+     * Je objekt na souřadnicích cedulí?
+     *
+     * @param worldName
+     * @param x
+     * @param y
+     * @param z
+     * @return
+     */
+    public abstract boolean isSignAt(String worldName, int x, int y, int z);
+
+    /**
      * Get block ID at given coordinate in given world (if chunk is loaded)
      * @param wname - world name
      * @param x - X coordinate