firstPageHeaderId property
The ID of the header used only for the first page of the section.
If use_first_page_header_footer is true, this value is used for the header on the first page of the section. If it's false, the header on the first page of the section uses the default_header_id. If unset, the value inherits from the previous SectionBreak's SectionStyle. If the value is unset in the first SectionBreak, it inherits from DocumentStyle's first_page_header_id. This property is read-only.
Implementation
core.String? firstPageHeaderId;