diff --git a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java
index b958591..5aca969 100644
--- a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java
+++ b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java
@@ -4,8 +4,6 @@
 
 import models.Node;
 import models.dataFlowModel.PushPullAttribute;
-import models.dataFlowModel.PushPullValue;
-
 
 /**--------------------------------------------------------------------------------
  * it has Delegation of Control-Flow algorithm.
@@ -21,9 +19,7 @@
 	 * 2. mxGraphを再構築？
 	 * 3. mxGraphModelから委譲可能なmxCellのリストと
 	 */
-	public void changeControlFlowGraph() {
-		
-	}
+	public void changeControlFlowGraph() {}
 
 	/**--------------------------------------------------------------------------------
 	* 
@@ -40,7 +36,6 @@
 		if( !(pushPullAttribute instanceof PushPullAttribute) ) return null;
 		
 		// switch objects by transfer type
-		
 		return null;
 	}
 }