Please answer a question about the following article about Protestantism:

Protestants can be differentiated according to how they have been influenced by important movements since the Reformation, today regarded as branches. Some of these movements have a common lineage, sometimes directly spawning individual denominations. Due to the earlier stated multitude of denominations, this section discusses only the largest denominational families, or branches, widely considered to be a part of Protestantism. These are, in alphabetical order: Adventist, Anglican, Baptist, Calvinist (Reformed), Lutheran, Methodist and Pentecostal. A small but historically significant Anabaptist branch is also discussed.

What small branch of Protestantism will also be discussed?
Anabaptist