src/vs/editor/common/model/bracketPairsTextModelPart/bracketPairsTree/ast.ts/BracketAstNode/constructor
class BracketAstNode:	private constructor(
		length: Length,
		public readonly bracketInfo: BracketKind,
		/**
		 * In case of a opening bracket, this is the id of the opening bracket.
		 * In case of a closing bracket, this contains the ids of all opening brackets it can close.
		*/
		public readonly bracketIds: SmallImmutableSet<OpeningBracketId>
	) {
		super(length);
	}