getDocumentType abstract method

String? getDocumentType(
  1. Mapping doc, [
  2. String? defaultValue
])

Extracts the document type from a raw Document map.

Retrieves the type identifier (e.g., "visa", "bulletin") from a raw Document map with a fallback default value if the type field is missing.

@param doc - Raw Document map containing type metadata

@param defaultValue - Fallback value if type is not found

@return Extracted Document type (or defaultValue if not present)

Implementation

String? getDocumentType(Mapping doc, [String? defaultValue]);