# File lib/rspec/core/formatters/deprecation_formatter.rb, line 15
        def deprecation(data)
          @count += 1
          if data[:message]
            @deprecation_stream.print data[:message]
          else
            @deprecation_stream.print "DEPRECATION: " unless File === @deprecation_stream
            @deprecation_stream.print "#{data[:deprecated]} is deprecated."
            @deprecation_stream.print " Use #{data[:replacement]} instead." if data[:replacement]
            @deprecation_stream.print " Called from #{data[:call_site]}." if data[:call_site]
            @deprecation_stream.puts
          end
        end