private void registerMapToStringToArrayDocumentType() {
        DocumentType x = new DocumentType("testMapStringToArrayOfInt");
        DataType value = new ArrayDataType(DataType.INT);
        DataType d = new MapDataType(DataType.STRING, value);
        x.addField(new Field("actualMapStringToArrayOfInt", d));
        types.registerDocumentType(x);
    }
Functional tests for com.yahoo.document.json.JsonWriter.

@author Steinar Knutsen
document/src/test/java/com/yahoo/document/json/JsonWriterTestCase.java