Returns a list of restclients.Department models, for the passed
    College model.

def get_departments_by_college(college):
    """
    Returns a list of restclients.Department models, for the passed
    College model.
    """
    url = "{}?{}".format(
        dept_search_url_prefix,
        urlencode({"college_abbreviation": college.label}))
    return _json_to_departments(get_resource(url), college)