languageAlpha1ToAlpha3 static method

String? languageAlpha1ToAlpha3(
  1. String? alpha1
)

Return the ISO-639 alpha3 equivalent language code for the given ISO 639 alpha1 language code.
If the given alpha1 code is not found, this function returns its argument unchanged.

Implementation

static String? languageAlpha1ToAlpha3(String? alpha1) {
  return a1toa3langmap[alpha1] ?? alpha1;
}