Add a SWML verb to a specific named section of the document. If the section does not exist, it is created automatically before the verb is appended. Throws a validation error if schema validation is enabled and the verb config is invalid.
Use addSection() first to create an empty section if you
prefer explicit creation, or use this method directly and let it auto-create.
For the default main section, use addVerb() instead.
Name of the section to add the verb to (e.g., "main", "transfer_flow").
The SWML verb name.
Configuration for the verb. Typically a Record<string, unknown> object;
certain verbs like sleep accept a bare number.
this — returns the service for fluent chaining.