module CopHelper

def autocorrect_source(source, file = nil)
  RuboCop::Formatter::DisabledConfigFormatter.config_to_allow_offenses = {}
  RuboCop::Formatter::DisabledConfigFormatter.detected_styles = {}
  cop.instance_variable_get(:@options)[:auto_correct] = true
  processed_source = parse_source(source, file)
  _investigate(cop, processed_source)
  @last_corrector.rewrite
end