public String stringForValue(keyForValues value)
	{

		String val = mxGraphMlConstants.ALL;
		
		switch (value)
		{
			case GRAPH:
			{
				val = mxGraphMlConstants.GRAPH;
				break;
			}
			case NODE:
			{
				val = mxGraphMlConstants.NODE;
				break;
			}
			case EDGE:
			{
				val = mxGraphMlConstants.EDGE;
				break;
			}
			case HYPEREDGE:
			{
				val = mxGraphMlConstants.HYPEREDGE;
				break;
			}
			case PORT:
			{
				val = mxGraphMlConstants.PORT;
				break;
			}
			case ENDPOINT:
			{
				val = mxGraphMlConstants.ENDPOINT;
				break;
			}
			case ALL:
			{
				val = mxGraphMlConstants.ALL;
				break;
			}
		}

		return val;
	}