src/vs/editor/common/model/bracketPairsTextModelPart/bracketPairsTree/ast.ts/ArrayListAstNode/prependChildOfSameHeight
class ArrayListAstNode:	public prependChildOfSameHeight(node: AstNode): void {
		this.throwIfImmutable();
		this._children.unshift(node);
		this.handleChildrenChanged();
	}