# File lib/rake.rb, line 60
60:   def rake_extension(method)
61:     if instance_methods.include?(method.to_s) || instance_methods.include?(method.to_sym)
62:       $stderr.puts "WARNING: Possible conflict with Rake extension: #{self}##{method} already exists"
63:     else
64:       yield
65:     end
66:   end