toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (methods != null) 'methods': methods!,
if (mixins != null) 'mixins': mixins!,
if (name != null) 'name': name!,
if (options != null) 'options': options!,
if (sourceContext != null) 'sourceContext': sourceContext!,
if (syntax != null) 'syntax': syntax!,
if (version != null) 'version': version!,
};