toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (allowNullHeader != null) 'allowNullHeader': allowNullHeader!,
if (schema != null) 'schema': schema!,
if (segmentTerminator != null) 'segmentTerminator': segmentTerminator!,
if (version != null) 'version': version!,
};