new_contents: #!/usr/bin/env python2
  # vim: set fileencoding=utf-8 :
  """
  Add [Newtonsoft.Json.JsonIgnore] to EF navigation properties
  so they serialize correctly
  """
  
  import os
  
  for root, dirs, files in os.walk(os.getcwd()):
      files[:] = [f for f in files if f[-3:].lower() == '.cs']
  
      for f in files:
          print('File {0}'.format(f))
  
          write = ''
          modified = False
  
          with open('{0}\\{1}'.format(root, f), 'r') as f_open:
              for line in  f_open.readlines():
                  if line.strip() == '[Newtonsoft.Json.JsonIgnore]':
                      line = ''
                      modified= True
                  elif line.strip().startswith('public virtual') and line.strip().endswith('{ get; set; }'):
                      print('Old line: {0}'.format(line))
                      line = '        [Newtonsoft.Json.JsonIgnore]\n{0}'.format(line)
                      print('New line: {0}'.format(line))
                      modified = True
                  write += '{0}\n'.format(line.rstrip())
  
          if modified:
              with open(f, 'w') as f_open:
                  f_open.write(write)
  
          del write
  
  print('Done.')
  
subject: Create efjsonignore.py