public Set<Entry<String, StatisticExpression>> getExpressionEntrySet() {
		if (this.statisticExpressionMap == null) {
			Map<String, StatisticExpression> expressionMap = newLinkedHashMap();
			for (ExpressionView each : getExpressionView()) {
				expressionMap.put(each.getDisplayName().replaceAll("\\s+", "_"), each.getExpression());
			}
			this.statisticExpressionMap = expressionMap.entrySet();
		}
		return this.statisticExpressionMap;
	}
Get all expression entry set (display name and
{@link StatisticExpression} pair).

@return entry set of display name and {@link StatisticExpression} pair
@since 3.1.2
ngrinder-core/src/main/java/net/grinder/SingleConsole.java