in Sources/Tokenizers/Tokenizer.swift [152:165]
func encode(text: String, addSpecialTokens: Bool) -> [Int]
func callAsFunction(_ text: String, addSpecialTokens: Bool) -> [Int]
/// Decode
func decode(tokens: [Int]) -> String
func decode(tokens: [Int], skipSpecialTokens: Bool) -> String
func convertTokenToId(_ token: String) -> Int?
func convertTokensToIds(_ tokens: [String]) -> [Int?]
func convertIdToToken(_ id: Int) -> String?
func convertIdsToTokens(_ ids: [Int]) -> [String?]
var bosToken: String? { get }