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   package org.smartcomps.twister.engine.priv.expression;
   
   import org.smartcomps.twister.engine.priv.expression.impl.BPELExpressionProcessorImpl;
   
   /***
    * Factory for the ExpressionProcessor interface.
    */
   public class ExpressionProcessorFactory {
   
      private static ExpressionProcessor processor = null;
  
      public static ExpressionProcessor getBPELExpressionProcessor() {
          if (processor == null) {
              processor = new BPELExpressionProcessorImpl();
          }
          return processor;
      }
  }