@Override
    public Stream<Item> fieldsFor(T document) {
        return Stream.of(new SimpleTextFieldItem(
                "Username", 
                document.usernameProperty(), 
                "The username to use when connecting to the database."
            )
        );
    }
@author Simon Jonasson
@param <T>  the document type
@since 3.0.0
tool-parent/tool-propertyeditor/src/main/java/com/speedment/tool/propertyeditor/editor/UsernamePropertyEditor.java