type:      map
mapping:
  company:
    type:      str
    required:  yes
  email:
    type:      str
  employees:
    type:      seq
    sequence:
      - type:    map
        mapping:
          code:
            type:      int
            required:  yes
          name:
            type:      str
            required:  yes
          email:
            type:      str