ContentHandler
constructor(focusableTypes: Set<Int> = setOf(
StoryTypes.TITLE.type.number,
StoryTypes.TEXT.type.number,
StoryTypes.H1.type.number,
StoryTypes.H2.type.number,
StoryTypes.H3.type.number,
StoryTypes.H4.type.number,
StoryTypes.CHECK_ITEM.type.number,
StoryTypes.UNORDERED_LIST_ITEM.type.number,
), stepsNormalizer: UnitsNormalizationMap, lineBreakMap: (StoryType) -> StoryType = ::defaultLineBreakMap)