class RuboCop::Cop::Primer::DeprecatedLabelSchemes

def on_send(node)
  return unless label_node?(node)
  return unless node.arguments?
  # we are looking for hash arguments and they are always last
  kwargs = node.arguments.last
  return unless kwargs.type == :hash
  kwargs.pairs.each do |pair|
    # Skip if we're not dealing with a symbol
    next if pair.key.type != :sym
    next unless pair.value.type == :sym || pair.value.type == :str
    value = pair.value.value.to_sym
    next unless DEPRECATIONS.key?(value)
    add_offense(pair.value, message: INVALID_MESSAGE)
  end
end