global_gateway-8.x-1.x-dev/modules/global_gateway_language/config/schema/global_gateway_language.schema.yml

global_gateway_language.global_gateway_language_mapping.*:
  type: config_entity
  label: 'Region Language Mapping'
  mapping:
    region:
      type: string
      label: 'Region code'
    languages:
      type: sequence
      label: 'Language codes'
      sequence:
        type: mapping
        mapping:
          code:
            type: string
            label: 'Language code'