…eep into nested JSON
…ce method that simply returns the .data interface
This defers the actual parsing of the text value to the numeric type until you dereference it using the Int(), Int64() or Float64() receiver methods. This has the benefit that large integers (>= 1e6) are not marshaled in floating point exponent notation, and that very large integers (>= 2^53) do not lose precision when marshaled because they were stored internally as float64s. This retains backward compatibility with Go 1.0.x because it doesn't have json.Number.