# File lib/AWS/ELB/load_balancers.rb, line 156
156:       def describe_instance_health( options = {} )
157:         raise ArgumentError, "No :load_balancer_name provided" if options[:load_balancer_name].nil? || options[:load_balancer_name].empty?
158: 
159:         params = {}
160: 
161:         params['LoadBalancerName'] = options[:load_balancer_name]
162:         params.merge!(pathlist('Instances.member', [options[:instances]].flatten)) if options.has_key?(:instances)
163: 
164:         return response_generator(:action => "DescribeInstanceHealth", :params => params)
165:       end