code: protected LayoutManager getLayOutManagerObj(ActionInvocation _invocation) {
  		if (layoutManager == null || "".equals(layoutManager)){
  			LOG.warn("No valid LayoutManager, using ClassicLayoutManager");
  			return new ClassicLayoutManager();
  		}
  
  		Object los = conditionalParse(layoutManager, _invocation);
  
  		if (los instanceof LayoutManager){
  			return (LayoutManager) los;
  		}
  
  		LayoutManager lo = null;
  		if (los instanceof String){
  			if (LAYOUT_CLASSIC.equalsIgnoreCase((String) los))
  				lo = new ClassicLayoutManager();
  			else if (LAYOUT_LIST.equalsIgnoreCase((String) los))
  				lo =  new ListLayoutManager();
  			else {
  				try {
  					lo = (LayoutManager) Class.forName((String) los).newInstance();
  				} catch (Exception e) {
  					LOG.warn("No valid LayoutManager: " + e.getMessage(),e);
  				}
  			}
  		}
  
  		return lo;
  	}
docs: Returns the export format indicated in the result-type parameter "layoutManager"
  @param _invocation
  @return