Add Back missing Function

Signed-off-by: Chaoscaot <chaoscaot444@gmail.com>

SpigotCore_Main/src/de/steamwar/sql/SchematicNode.java

@@ -522,6 +522,14 @@ public class SchematicNode {
         schemFormat = newFormat;
     }
 
+    public static Clipboard clipboardFromStream(InputStream is, boolean schemFormat) {
+        try {
+            return WorldEditWrapper.impl.getClipboard(is, schemFormat);
+        } catch (IOException e) {
+            throw new SecurityException("Could not read schem", e);
+        }
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (!(obj instanceof SchematicNode))