src/vs/editor/common/tokens/contiguousMultilineTokensBuilder.ts/ContiguousMultilineTokensBuilder/_serializeSize
class ContiguousMultilineTokensBuilder:	private _serializeSize(): number {
		let result = 0;
		result += 4; // 4 bytes for the count
		for (let i = 0; i < this._tokens.length; i++) {
			result += this._tokens[i].serializeSize();
		}
		return result;
	}