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       {
              FileOutputStream fos = new FileOutputStream(projectFile);
              project.save(fos, "IDE Project File");
       }
       ...
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    Object clone()
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      try {
        ThisClass obj = (ThisClass)super.clone();
        obj.field1 = (int[])field1.clone();
        obj.field2 = field2;
        return obj;
      } catch(CloneNotSupportedException e) {
        throw new InternalError("Unexpected CloneNotSUpportedException: " + e.getMessage());
      }
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