function findClosingParen(node) {
			let nodeToCheck = node;

			while (!astUtils.isParenthesised(sourceCode, nodeToCheck)) {
				nodeToCheck = nodeToCheck.parent;
			}
			return sourceCode.getTokenAfter(nodeToCheck);
		}
Gets the closing parenthesis by the given node.
@param {ASTNode} node first node after an opening parenthesis.
@returns {Token} The found closing parenthesis token.