old_contents: from robot.conf import Language
  
  
  class Fi(Language):
      setting_headers = {'H 1'}
      variable_headers = {'H 2'}
      test_case_headers = {'H 3'}
      task_headers = {'H 4'}
      keyword_headers = {'H 5'}
      comment_headers = {'H 6'}
      library = 'L'
      resource = 'R'
      variables = 'V'
      documentation = 'S 1'
      metadata = 'S 2'
      suite_setup = 'S 3'
      suite_teardown = 'S 4'
      test_setup = 'S 5'
      test_teardown = 'S 6'
      test_template = 'S 7'
      force_tags = 'S 8'
      default_tags = 'S 9'
      test_timeout = 'S 10'
      setup = 'S 11'
      teardown = 'S 12'
      template = 'S 13'
      tags = 'S 14'
      timeout = 'S 15'
      arguments = 'S 16'
      return_ = 'S 17'
      bdd_prefixes = {}
  
new_contents: from robot.conf import Language
  
  
  class Custom(Language):
      setting_headers = {'H 1'}
      variable_headers = {'H 2'}
      test_case_headers = {'H 3'}
      task_headers = {'H 4'}
      keyword_headers = {'H 5'}
      comment_headers = {'H 6'}
      library = 'L'
      resource = 'R'
      variables = 'V'
      documentation = 'S 1'
      metadata = 'S 2'
      suite_setup = 'S 3'
      suite_teardown = 'S 4'
      test_setup = 'S 5'
      test_teardown = 'S 6'
      test_template = 'S 7'
      force_tags = 'S 8'
      default_tags = 'S 9'
      test_timeout = 'S 10'
      setup = 'S 11'
      teardown = 'S 12'
      template = 'S 13'
      tags = 'S 14'
      timeout = 'S 15'
      arguments = 'S 16'
      return_ = 'S 17'
      bdd_prefixes = {}
  
subject: Fix class name in test file