class AWS::DynamoDB::TableCollection

def key_schema options
  hash_key, range_key = options.values_at(:hash_key, :range_key)
  # default options for :hash_key
  hash_key ||= { :id => :string }
  schema = {}
  schema[:hash_key_element] = schema_element(hash_key, "hash")
  if range_key
    schema[:range_key_element] = schema_element(range_key, "range")
  end
  schema
end