toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (chunkId != null) 'chunkId': chunkId!,
if (content != null) 'content': content!,
if (pageFooters != null) 'pageFooters': pageFooters!,
if (pageHeaders != null) 'pageHeaders': pageHeaders!,
if (pageSpan != null) 'pageSpan': pageSpan!,
if (sourceBlockIds != null) 'sourceBlockIds': sourceBlockIds!,
};