Groovy .each只能迭代一次

class Module {
    public String name = '';
    public Boolean isCustom = false;
    public Module(String name,Boolean custom){
        this.name = name;
        this.isCustom = custom;
    }
}

//creates array from the ext_module env var
modules = [];
EXT_MODULE.split(',').each { 
    modules.add(new Module(it,false));
}


println modules;
modules.each {  
    println "MODULE NAME ::::: ${it.name}"
    if(it.isCustom)
    {
        println "install custom";
    } else {
        println "install non custom";
    }
};

这是跑步的结果.该数组显示4个元素,但是.each黑色中的代码只能执行一次.

Running: Print Message
[Module@71f09325,Module@e1ddb41,Module@7069a674,Module@1f68f952]
Running: Print Message
MODULE NAME ::::: puppetlabs-ntp
Running: Print Message
install non custom
Running: End of Workflow
Finished: SUCCESS