gistfile1.txt

def find(id)
  @source.find(id)
end

def find_all(ids)
  @source.find_all(ids)
end

------------------

def find(id)
  if(id.is_a? Array)
    find_all(ids)
  end
  
  @source.find(id)
end

private 

find_all(ids)
  @source.find_all(ids)
end

-------------------

def find(id_or_id_array)
  return find_all(id_or_id_array) if id_or_id_array.is_a? Array

  @source.find(id_or_id_array)
end

private 

find_all(ids)
  @source.find_all(ids)
end

-------------------

def find(id_or_id_array)
  if id_or_id_array.is_a? Array
    id_array = id_or_id_array
    return find_all(id_array)
  end
 
  id = id_or_id_array
  @source.find(id)
end

private

find_all(ids)
  @source.find_all(ids)
end