function pathToDescendant(node, descendant) {
			return pathToAncestor(descendant, node).reverse();
		}
Finds the path from the given node to the specified descendant.
@param {ASTNode} node First node in the path.
@param {ASTNode} descendant Last node in the path.
@returns {ASTNode[]} Path, including both nodes.
@throws {Error} If the given node does not have the specified descendant.