old_contents: #!/usr/bin/env python
  
  
  NAME = 'Wallarm'
  
  
  def is_waf(self):
      if self.matchheader(('server', "nginx-wallarm")):
          return True
  
new_contents: #!/usr/bin/env python
  
  NAME = 'Wallarm'
  
  def is_waf(self):
      return self.matchheader(('server', "nginx-wallarm"))
  
  
subject: Update wallarm.py