A party may in his notice name as the deponent a public or private corporation or a partnership or association or governmental agency and designate with reasonable particularity the matters on which examination is requested. The organization so named shall designate one or more officers, directors, or managing agents, or other persons who consent to testify on its behalf, and may set forth, for each person designated, the matters on which he will testify. The persons so designated shall testify as to matters known or reasonably available to the organization. This Article does not preclude taking a deposition by any other procedure authorized in this Chapter.