# File lib/AWS/EC2/security_groups.rb, line 39
39:       def describe_security_groups( options = {} )
40:         options = { :group_name => [] }.merge(options)
41:         params = pathlist("GroupName", options[:group_name] )
42:         return response_generator(:action => "DescribeSecurityGroups", :params => params)
43:       end