I cannot figure out how to call the JS generated code for the following function:

```
void printmap(const map<string, vector<string> > &ms)
{
    map<string, vector<string> >::const_iterator m1i;
    for (m1i = ms.begin(); m1i != ms.end(); m1i++)
    {
        printf("%s:\n", m1i->first.c_str());
        vector<string>::const_iterator m2i;
        for (m2i = m1i->second.begin(); m2i != m1i->second.end(); m2i++)
            printf("\t%s\n", m2i->c_str());
    }
}

```

more specifically, what does the JS look like to prepare the 'ms' parameter ?