function addNullElementsToIgnoreList(node) {
			let previousToken = sourceCode.getFirstToken(node);

			node.elements.forEach(element => {
				let token;

				if (element === null) {
					token = sourceCode.getTokenAfter(previousToken);

					if (astUtils.isCommaToken(token)) {
						commaTokensToIgnore.push(token);
					}
				} else {
					token = sourceCode.getTokenAfter(element);
				}

				previousToken = token;
			});
		}
Adds null elements of the given ArrayExpression or ArrayPattern node to the ignore list.
@param {ASTNode} node An ArrayExpression or ArrayPattern node.
@returns {void}