class RSpec::Core::Formatters::DeprecationFormatter::RaiseErrorStream

Not really a stream, but is usable in place of one.
@private

def puts(message) 

def puts(message)
  raise DeprecationError, message
end

def summarize(summary_stream, deprecation_count) 

def summarize(summary_stream, deprecation_count)
  summary_stream.puts "\n#{Helpers.pluralize(deprecation_count, 'deprecation')} found."
end