# File lib/rudy/aws/ec2/keypair.rb, line 46
46:       def list_as_hash(*names)
47:         names = names.flatten
48:         klist = @@ec2.describe_keypairs(:key_name => names)
49:         return unless klist['keySet'].is_a?(Hash)
50:         keypairs = {}
51:         klist['keySet']['item'].each do |oldkp| 
52:           kp = from_hash(oldkp)
53:           keypairs[kp.name] = kp
54:         end
55:         keypairs = nil if keypairs.empty?
56:         keypairs
57:       end