class RuboCop::Cop::Bundler::DuplicatedGroup

def find_source_key(node)
  source_block = node.each_ancestor(:block).find do |block_node|
    SOURCE_BLOCK_NAMES.include?(block_node.method_name)
  end
  return unless source_block
  "#{source_block.method_name}#{source_block.send_node.first_argument&.source}"
end