createDocument abstract method
Creates a Document instance from data and signature.
Two common use cases:
- Load existing document: Provide
dataandsignaturefrom storage - Create new empty document: Omit
dataandsignature
data is the optional encoded document data (JSON string).
signature is the optional signature of the data (Base64-encoded as TransportableData).
Returns a new Document instance.
Implementation
Document createDocument({String? data, TransportableData? signature});