snaker-core/src/main/java/org/snaker/engine/model/NodeModel.java
public void execute(Execution execution) {
		intercept(preInterceptorList, execution);
		exec(execution);
		intercept(postInterceptorList, execution);
	}
public void execute(Execution execution) {
		intercept(preInterceptorList, execution);
		exec(execution);
		intercept(postInterceptorList, execution);
	}
对执行逻辑增加前置、后置拦截处理
@param execution 执行对象