prefixes:
  gbfs: "http://example.com/terms#"
  ex: "http://example.com/"
  geo: "http://www.w3.org/2003/01/geo/wgs84_pos#"
  myfun: "http://example.com/functions#"

sources:
  station:
    access: data.json
    referenceFormulation: jsonpath
    iterator: $[*].fields

mappings:
  # System
  system_info:
    graphs:
    - function: myfun:parseDate
      parameters:
      - [myfun:valueParameter, ex:stations/$(number)?last_updated=]
      - [myfun:valueParameter2, $(last_update)]
    sources: station
    s: ex:stations/$(number)
    po:
    - [gbfs:name, $(name)]