# File lib/AWS/Autoscaling/autoscaling.rb, line 218
218:       def set_desired_capacity( options = {} )
219:         raise ArgumentError, "No :autoscaling_group_name provided" if options[:autoscaling_group_name].nil? || options[:autoscaling_group_name].empty?
220:         raise ArgumentError, "No :desired_capacity provided" if options[:desired_capacity].nil? || options[:desired_capacity].empty?
221: 
222:         params = {}
223:         params['AutoScalingGroupName'] = options[:autoscaling_group_name]
224:         params['DesiredCapacity'] = options[:desired_capacity].to_s
225: 
226:         return response_generator(:action => "SetDesiredCapacity", :params => params)
227:       end