old_contents: """module concerns itself with tasks involving branch deployments of projects."""
  
  from fabric.api import task
  from decorators import requires_aws_stack, debugtask
  from buildercore import bootstrap, cloudformation
  from buildercore.concurrency import concurrency_for
  import buildvars
  
  import logging
  
  LOG = logging.getLogger(__name__)
  
  @task
  @requires_aws_stack
  def switch_revision_update_instance(stackname, revision=None, concurrency='serial'):
      buildvars.switch_revision(stackname, revision)
      bootstrap.update_stack(stackname, service_list=['ec2'], concurrency=concurrency_for(stackname, concurrency))
  
  @debugtask
  @requires_aws_stack
  def load_balancer_status(stackname):
      load_balancer_name = cloudformation.read_output(stackname, 'ElasticLoadBalancer')
      print(load_balancer_name)
  
new_contents: """module concerns itself with tasks involving branch deployments of projects."""
  
  from fabric.api import task
  from decorators import requires_aws_stack, debugtask
  from buildercore import bootstrap, cloudformation, context_handler
  from buildercore.core import boto_client
  from buildercore.concurrency import concurrency_for
  import buildvars
  
  import logging
  
  LOG = logging.getLogger(__name__)
  
  @task
  @requires_aws_stack
  def switch_revision_update_instance(stackname, revision=None, concurrency='serial'):
      buildvars.switch_revision(stackname, revision)
      bootstrap.update_stack(stackname, service_list=['ec2'], concurrency=concurrency_for(stackname, concurrency))
  
  @debugtask
  @requires_aws_stack
  def load_balancer_status(stackname):
      context = context_handler.load_context(stackname)
      elb_name = cloudformation.read_output(stackname, 'ElasticLoadBalancer')
      conn = boto_client('elb', context['aws']['region'])
      health = conn.describe_instance_health(
          LoadBalancerName=elb_name,
      )['InstanceStates']
      LOG.info("Load balancer name: %s", elb_name)
      LOG.info("Health: %s", health)
  
subject: Complete output of load_balancer_status @debugtask