wholeTextAt
Returns the wholeText() of the single element at pointer, or null if the path does not resolve to a single element.
Return
The element's original, un-normalized combined text, or null.
Parameters
pointer
The KPointer identifying the element.
Parses path via KPointer.from and returns the wholeText() of the single element at that path, or null.
Return
The element's original, un-normalized combined text, or null.
Parameters
path
A pointer string (RFC 6901, fragment, or dot-notation, dispatched by prefix).
Throws
if path is not a valid pointer string.