{
  "id": "if-modified-since",
  "header": "If-Modified-Since",
  "type": "Request",
  "description": "Makes the request conditional on the resource being modified since a date.",
  "example": "Sat, 29 Oct 1994 19:43:31 GMT",
  "url": "https://gratisapi.com/api/http-headers/if-modified-since"
}