merchantAccountDomestic property
Merchant Account Information Domestic Central Repository
If merchants is empty, then most likely there's a single Merchant Account available at ID "51". (No merchant information between ID "02" to "45")
It is possible that in a single QRIS, tag "51" co-exists together with tag "26" or more. Please consult your Payment Provider regarding the priority.
Implementation
late final Merchant? merchantAccountDomestic = this[51] != null
? Merchant(this[51]!)
: null;