Hello,

When converting an RDF object with a number exceeding Integer.MAX_VALUE such as:

<https://example.com/data/> <https://example.com/field/contentSize> "6972682403840"^^<http://www.w3.org/2001/XMLSchema#integer>

To an JSON-LD object using the useNativeTypes option, the resulting json object will be:

[
  {
    "@id": "https://example.com/data/",
    "https://example.com/field//contentSize": [
      {
        "@value": "6972682403840"
      }
    ]
  }
]

Where the @value for contentSize is mapped to a string and not to a member.
Would it be ok to change this part and change the Integer for a Long ?
Or are there any consequence that I am missing ?

I can take care of the PR if needed.

Thanks :)