@!attribute applies documentation to wrong class after method aliasing

[ferrous26]

If I have an inner class with the same attribute as an outer class, but the inner class uses @!attribute to declare the attribute, the documentation might be applied to the outer class instead of the inner class.

I can reliably reproduce this by creating a method alias in the inner class before declaring the @!attribute information.

class A

  # Outer attr
  attr_reader :foo

  class B
    alias_method :bar?, :bar
    # @!attribute [r] foo
    #   Inner attr
  end

end

[ferrous26]

Moving the method alias to after the @!attribute info works around this issue.