Perform alterations on language types.
$language_types: Array of language type definitions.
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_language_types_info_alter(array &$language_types) {
if (isset($language_types['custom_language_type'])) {
$language_types['custom_language_type_custom']['description'] = t('A far better description.');
}
}