Adding lancode during Entity Generating

When we have multilingual sites it's important to create entities in different languages and also during migration look for entities by it's languages.

migrate_plus.migration.xxxxxx.yml

source:
fields:
-
name: language
label: Language
-
name: field_xxx
label: XXX
process:
field_xxx:
-
plugin: keep_value_on_translation
method: process
source: field_xxx
-
plugin: entity_generate
value_key: name
bundle_key: vid
bundle: xxx
entity_type: taxonomy_term
ignore_case: true
values:
langcode: language

If we have configuration['values']['langcode'] we will check entity by language.