class RuboCop::Cop::Lint::Void

def check_begin(node)
  expressions = *node
  expressions.drop_last(1).each do |expr|
    check_for_void_op(expr)
    check_for_literal(expr)
    check_for_var(expr)
    check_for_self(expr)
    check_for_defined(expr)
  end
end