[API: GenericFieldInfo contains only records with data...]

It would be great if JSON response (for passwords) listed info for fields not containing any data. Now there's no way to figure out what DisplayName is for all Genericfields. Example:

 

    [
        {
            "PasswordID": 46411,
            "Title": "forum4",
            "UserName": "login2",
            "Description": "My login to forum4",
            "GenericField1": "loginasa",
            "GenericField2": "",
            "GenericField3": "",
            "GenericField4": "",
            "GenericField5": "",
            "GenericField6": "",
            "GenericField7": "",
            "GenericField8": "",
            "GenericField9": "",
            "GenericField10": "",
            "GenericFieldInfo": [
                {
                    "GenericFieldID": "GenericField1",
                    "DisplayName": "Pin Number",
                    "Value": "0000"
                },
                {
                    "GenericFieldID": "GenericField2",
                    "DisplayName": "Surname",
                    "Value": "Reznor"
                }
            ],
            "AccountTypeID": 0,
            "Notes": "",
            "URL": "http://www.microsoft.com",
            "Password": "JENN-ZHn#3+A^yc",
            "ExpiryDate": "23/08/2012",
            "AllowExport": true,
            "AccountType": ""
        }
    ]

 I need to know what DisplayName is for GenericField 2 - 10 - they're not returned if there's no values...

[List documents from API]

Unfortunately the API is not very useful concerning documents... Is there really no way of listing existing documents? I may be blind, but if not - please add a way to list documents from the API...