Define the expanded qualifier name.

def contributor_director(**kwargs):
    """Define the expanded qualifier name."""
    if kwargs.get('qualifier') in ETD_MS_CONTRIBUTOR_EXPANSION:
        # Return the element object.
        return ETD_MSContributor(
            role=ETD_MS_CONTRIBUTOR_EXPANSION[kwargs.get('qualifier')],
            **kwargs
        )
    else:
        return None