class RuboCop::Cop::Style::AutoResourceCleanup

end
# …
File.open(‘file’) do |f|
# good
f = File.open(‘file’)
# bad
@example
resource cleanup.
accepting version of a method that does automatic
Checks for cases when you could use a block

def cleanup?(node) 

def cleanup?(node)
  parent = node.parent
  node.block_argument? || (parent && (parent.block_type? || !parent.lvasgn_type?))
end

def on_send(node) 

def on_send(node)
  TARGET_METHODS.each do |target_class, target_method|
    next if node.method_name != target_method
    target_receiver = s(:const, nil, target_class)
    next if node.receiver != target_receiver
    next if cleanup?(node)
    add_offense(node, message: format(MSG, class: target_class, method: target_method))
  end
end