Type of the step made by module:engine/view/treewalker~ViewTreeWalker.
Possible values: 'elementStart' if walker is at the beginning of a node, 'elementEnd' if walker is at the end
of node, or 'text' if walker traversed over single and multiple characters.
For module:engine/view/text~ViewText elementStart and elementEnd is not returned.
Type of the step made by module:engine/view/treewalker~ViewTreeWalker. Possible values:
'elementStart'if walker is at the beginning of a node,'elementEnd'if walker is at the end of node, or'text'if walker traversed over single and multiple characters. For module:engine/view/text~ViewTextelementStartandelementEndis not returned.