function isValidRestSpreadPair(ctorParam, superArg) {
	return (
		ctorParam.type === "RestElement" &&
		superArg.type === "SpreadElement" &&
		isValidIdentifierPair(ctorParam.argument, superArg.argument)
	);
}
Checks whether given 2 nodes are a rest/spread pair which has the same values.
@param {ASTNode} ctorParam A node to check.
@param {ASTNode} superArg A node to check.
@returns {boolean} `true` if the nodes are a rest/spread pair which has the
     same values.