Construct a one-liner comment from contents.
Set indent suppression from this point and all children.
Suppress indentation by also affecting the level propagated from the parent.
Sets the width of the indentation
Clear the node of childrens.
Separate with at most count empty lines.
Insert element at the front.
Insert element at the back.
Remove all children and clear line separation.
Render content with an indentation that takes the parent in consideration.
A plantuml comment using ''' as is.
Compared to Text a comment is affected by indentation.