anchor.diff:  < 200
   < Content-Type: application/json
   {
  -    "seq_no": 1909,
  -    "code": 62321,
  -    "title": "Residential Intellectual and Developmental Disability Facilities",
  -    "change_indicator": 1,
  -    "trilateral": 1
  +    "seq_no": 1663,
  +    "code": 541430,
  +    "title": "Graphic Design Services",
  +    "index": [
  +        "Art services, commercial",
  +        "Art services, graphic",
  +        "Art studios, commercial",
  +        "Artists, independent commercial",
  +        "Artists, independent graphic",
  +        "Artists, independent medical",
  +        "Commercial art services",
  +        "Commercial artists, independent",
  +        "Commercial illustration services",
  +        "Commercial illustrators, independent",
  +        "Communication design services, visual",
  +        "Corporate identification (i.e., logo) design services",
  +        "Graphic art and related design services",
  +        "Graphic artists, independent",
  +        "Graphic design services",
  +        "Illustrators, independent commercial",
  +        "Medical art services",
  +        "Medical artists, independent",
  +        "Medical illustration services",
  +        "Medical illustrators, independent",
  +        "Silk screen design services",
  +        "Studios, commercial art"
  +    ]
   }
   
   Get all NAICS codes above in the hierarchy of the requested code.
  
positive.code:         "seq_no": 1403,
          "code": 511,
          "title": "Publishing Industries (except Internet)",
          "change_indicator": 0,
          "trilateral": 1
      },
      {
          "seq_no": 1404,
          "code": 5111,
          "title": "Newspaper, Periodical, Book, and Directory Publishers",
          "change_indicator": 0,
          "trilateral": 1
      },
      {
          "seq_no": 1405,
          "code": 51111,
          "title": "Newspaper Publishers",
          "change_indicator": 0,
          "trilateral": 1
      },
      {
          "seq_no": 1406,
          "code": 511110,
          "title": "Newspaper Publishers",
          "change_indicator": 0,
          "trilateral": 0
      },
      {
          "seq_no": 1407,
          "code": 51112,
          "title": "Periodical Publishers",
          "change_indicator": 0,
          "trilateral": 1
      },
      {
          "seq_no": 1408,
          "code": 511120,
          "title": "Periodical Publishers",
          "change_indicator": 0,
          "trilateral": 0
      },
      {  ...  }
  ]
  
negative.code:         "seq_no": 1402,
          "code": 51,
          "title": "Information",
          "trilateral": 1
      },
      {
          "seq_no": 1470,
          "code": 519,
          "title": "Other Information Services",
          "trilateral": 1
      },
      {
          "seq_no": 1471,
          "code": 5191,
          "title": "Other Information Services",
          "trilateral": 1
      },
      {
          "seq_no": 1474,
          "code": 51912,
          "title": "Libraries and Archives",
          "trilateral": 1
      }
  ]