100: def describe_instance_attribute( options = {} )
101: raise ArgumentError, "No :instance_id provided" if options[:instance_id].nil? || options[:instance_id].empty?
102: raise ArgumentError, "No :attribute provided" if options[:attribute].nil? || options[:attribute].empty?
103: valid_attributes = %w(instanceType kernel ramdisk userData disableApiTermination instanceInitiatedShutdownBehavior rootDevice blockDeviceMapping)
104: raise ArgumentError, "Invalid :attribute provided" unless valid_attributes.include?(options[:attribute].to_s)
105: params = {}
106: params["InstanceId"] = options[:instance_id]
107: params["Attribute"] = options[:attribute]
108: return response_generator(:action => "DescribeInstanceAttribute", :params => params)
109: end