metadata property
Metadata consists of entries, each of which includes a key and a value. Limitations: * Maximum 20 key-value pairs per request. Otherwise, error "177" occurs: "Metadata size exceeds limit" * Maximum 20 characters per key. Otherwise, error "178" occurs: "Metadata key size exceeds limit" * A key cannot have the name checkout.linkId. Any value that you provide with this key is going to be replaced by the real payment link ID.
Implementation
@BuiltValueField(wireName: r'metadata')
BuiltMap<String, String>? get metadata;