toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (cacheControl != null) 'cacheControl': cacheControl!,
if (contentDisposition != null) 'contentDisposition': contentDisposition!,
if (contentEncoding != null) 'contentEncoding': contentEncoding!,
if (contentLanguage != null) 'contentLanguage': contentLanguage!,
if (contentType != null) 'contentType': contentType!,
if (customMetadata != null) 'customMetadata': customMetadata!,
if (customTime != null) 'customTime': customTime!,
};