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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def existing_analysis(using):
 """ Get the existing analysis for the `using` Elasticsearch connection """

    es = connections.get_connection(using)
    index_name = settings.ELASTICSEARCH_CONNECTIONS[using]['index_name']
    if es.indices.exists(index=index_name):
        return stringer(es.indices.get_settings(index=index_name)[index_name]['settings']['index'].get('analysis', {}))
    return DOES_NOT_EXIST