snaker-core/src/main/java/org/snaker/engine/impl/GeneralAccessStrategy.java
public boolean isAllowed(String operator, List<TaskActor> actors) {
		List<String> assignees = ensureGroup(operator);
		if(assignees == null) assignees = new ArrayList<String>();
		assignees.add(operator);
		boolean isAllowed = false;
		for (TaskActor actor : actors) {
			for (String assignee : assignees) {
				if (actor.getActorId().equals(assignee)) {
					isAllowed = true;
					break;
				}
			}
		}
		return isAllowed;
	}
public boolean isAllowed(String operator, List<TaskActor> actors) {
		List<String> assignees = ensureGroup(operator);
		if(assignees == null) assignees = new ArrayList<String>();
		assignees.add(operator);
		boolean isAllowed = false;
		for (TaskActor actor : actors) {
			for (String assignee : assignees) {
				if (actor.getActorId().equals(assignee)) {
					isAllowed = true;
					break;
				}
			}
		}
		return isAllowed;
	}
如果操作人id所属的组只要有一项存在于参与者集合中，则表示可访问