class PgSearch::Features::DMetaphone::Normalizer

def add_normalization(original_sql)
  otherwise_normalized_sql = Arel.sql(
    normalizer_to_wrap.add_normalization(original_sql)
  )
  Arel::Nodes::NamedFunction.new(
    "pg_search_dmetaphone",
    [otherwise_normalized_sql]
  ).to_sql
end