    # File lib/fog/aws/requests/beanstalk/describe_environments.rb, line 25
            def describe_environments(options={})
              if environment_ids = options.delete('EnvironmentIds')
                options.merge!(AWS.indexed_param('EnvironmentIds.member.%d', [*environment_ids]))
              end
              if environment_names = options.delete('EnvironmentNames')
                options.merge!(AWS.indexed_param('EnvironmentNames.member.%d', [*environment_names]))
              end
              request({
                          'Operation'    => 'DescribeEnvironments',
                          :parser     => Fog::Parsers::AWS::ElasticBeanstalk::DescribeEnvironments.new
                      }.merge(options))
            end