# File lib/rake/application.rb, line 192
192:     def deprecate(old_usage, new_usage, call_site)
193:       unless options.ignore_deprecate
194:         $stderr.puts "WARNING: '#{old_usage}' is deprecated.  " +
195:           "Please use '#{new_usage}' instead.\n" +
196:           "    at #{call_site}"
197:       end
198:     end