The importmulti help text reads, in part: 

```
{                                                          (json object) If a ranged descriptor is used, this specifies the start and end of the range to import
           "start": n,                                              (numeric, optional, default=0) Start of the range to import
           "end": n,                                                (numeric, required) End of the range to import (inclusive)
},
```

This is a value for which a key is missing; it should be "range": { ...
ret += "json array";
            break;
        }
            
        }
    }
    if (m_fallback.which() == 1) {
        ret += ", optional, default=" + boost::get<std::string>(m_fallback);
    } else {
        switch (boost::get<RPCArg::Optional>(m_fallback)) {
        case RPCArg::Optional::OMITTED: {
            
            break;
        }
        case RPCArg::Optional::OMITTED_NAMED_ARG: {
            ret += ", optional"; 
            break;
        }
        case RPCArg::Optional::NO: {
            ret += ", required";
            break;
        }
            
        }
    }
    ret += ")";
    ret += m_description.empty() ? "" : " " + m_description;
    return ret;
}
std::string RPCArg::ToStringObj(const bool oneline) const