Create a definition list item node that describes the default value
    of a Field config.

    Parameters
    ----------
    field : ``lsst.pex.config.Field``
        A configuration field.
    state : ``docutils.statemachine.State``
        Usually the directive's ``state`` attribute.

    Returns
    -------
    ``docutils.nodes.definition_list_item``
        Definition list item that describes the default target of a
        ConfigurableField config.

def create_default_item_node(field, state):
    """Create a definition list item node that describes the default value
    of a Field config.

    Parameters
    ----------
    field : ``lsst.pex.config.Field``
        A configuration field.
    state : ``docutils.statemachine.State``
        Usually the directive's ``state`` attribute.

    Returns
    -------
    ``docutils.nodes.definition_list_item``
        Definition list item that describes the default target of a
        ConfigurableField config.
    """
    default_item = nodes.definition_list_item()
    default_item.append(nodes.term(text="Default"))
    default_item_content = nodes.definition()
    default_item_content.append(
        nodes.literal(text=repr(field.default))
    )
    default_item.append(default_item_content)
    return default_item