toJson method
Implementation
Map<String, Object?> toJson() => <String, Object?>{
if (applicationName != null) 'application_name': applicationName,
if (timezone != null) 'timezone': timezone,
if (charset != null) 'charset': charset,
if (schema != null) 'schema': schema,
if (extraSql.isNotEmpty) 'extra_sql': extraSql,
};