Do not use this method. It is only used internally by the library. It will be removed in a future version.
addSection
addSection(options): void
Adds new section properties.
Note: Previous section is created in paragraph after the current element, and then new section will be added.
The spec says:
section element should be in the last paragraph of the section
Deprecated
Do not use this method. It is only used internally by the library. It will be removed in a future version.