public String toString(){
		StringBuilder stringBuilder = new StringBuilder();
		String endl = System.getProperty("line.separator");
		stringBuilder.append("-----" + endl + 
							"Entity dump :" + endl);
		
		for(String key : this.properties.keySet()) 
			stringBuilder.append(">>["+key+"] : " +this.properties.get(key) + endl);
		
		stringBuilder.append("-----" + endl );
		return stringBuilder.toString();
	}