Abstraction of result set from node.
Create a node result object.
Get the number of documents. The return value is the number of documents.
Get the value of hint information. The return value is a result document object or nil if the index is out of bounds.
Get the value of hint information. `key’ specifies the key of a hint. "VERSION", "NODE", "HIT", "HINT#n", "DOCNUM", "WORDNUM", "TIME", "LINK#n", and "VIEW" are provided for keys. The return value is the hint or nil if the key does not exist.
[Validate]