diff --git a/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaModel.java b/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaModel.java
index 3bbdeb4a..a4dff2e2 100644
--- a/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaModel.java
+++ b/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaModel.java
@@ -70,35 +70,4 @@ public class XmlMetaModel {
         this.pages = pages;
     }
 
-    // Public Methods
-
-    public void addPage(XmlMetaPageModel page) {
-        this.pages.add(page);
-    }
-
-    public void addPageAfterIndex(int index, XmlMetaPageModel page) {
-        this.pages.add(index, page);
-
-        //Update index
-        this.updateIndex();
-    }
-
-    public void removePage(XmlMetaPageModel page) {
-        this.pages.remove(page);
-    }
-
-    public void removePageAtIndex(int index) {
-        this.pages.remove(index);
-
-        //Update index
-        this.updateIndex();
-    }
-
-    // Internal Methods
-    private void updateIndex() { // TODO-rca: 効率悪そう
-        for (int i = 0; i < this.pages.size(); i++) {
-            this.pages.get(i).setIndex(i);
-        }
-    }
-
 }