class RuboCop::Cop::RSpec::ImplicitExpect

def on_send(node)
  return unless (source_range = offending_expect(node))
  expectation_source = source_range.source
  if expectation_source.start_with?(style.to_s)
    correct_style_detected
  else
    opposite_style_detected
    msg = offense_message(expectation_source)
    add_offense(source_range, message: msg) do |corrector|
      replacement = replacement_source(expectation_source)
      corrector.replace(source_range, replacement)
    end
  end
end