Combinatory method like tap, but able to return a different value?

Define Object#as:

class Object
  def as
    yield self
  end
end

And now you can write:

def not_sure_this_is_nice_enough_method1
  something_complex(a, b, c).as do |obj| 
    a_predicate_check? ? obj.one_more_method_call : obj
  end
end