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  'field_address/country_code':
    plugin: default_value
    default_value: US
  'field_address/langcode':
    plugin: default_value
    default_value: en
  'field_address/address_line1': streetAddress
  'field_address/locality': city
  # This has the form US-IN.
  'field_address/administrative_area':
    plugin: concat
    delimiter: -
    source:
      - '@field_address/country_code'
      - state
  'field_address/postal_code': zip