addSection
Add a new empty section to the SWML document. Sections are named containers for
ordered lists of verbs. Every document starts with a main section.
Silently no-ops if a section with the given name already exists (unlike the
Python SDK which returns False on duplicate). Follow up with
addVerbToSection() to populate the section.
Parameters
sectionName
Name of the section to create.
Returns
this — returns the service for fluent chaining.