TRUE if the node is nullNode.isNull
bool isNull()Checks whether node is a json.types.NodeType.Null.
A json.types.NodeType.Null node is not the same as a NULL node; a json.types.NodeType.Null represents a literal null value in the JSON tree.
bool isNull()Checks whether node is a json.types.NodeType.Null.
A json.types.NodeType.Null node is not the same as a NULL node; a json.types.NodeType.Null represents a literal null value in the JSON tree.
TRUE if the node is null