The type of language used to define the content language. File core/lib/Drupal/Core/Language/LanguageInterface

The language code used when no language is explicitly assigned (yet). Should be used when language information is not available or cannot be

public Language::getDirection() Gets the

hook_transliteration_overrides_alter(&$overrides, $langcode) Provide language-specific overrides for transliteration

language_modules_uninstalled($modules) Implements

public LanguageNegotiationMethodBas

Add language handling functionality to Drupal. File core/modules/language/language.module

public LanguageManagerInterface::reset($type =

The language negotiation plugin ID. Type: string File

public LanguageInterface::isDefault()