src/vs/workbench/contrib/debug/common/debugModel.ts/ExpressionContainer/constructor
class ExpressionContainer:	constructor(
		protected session: IDebugSession | undefined,
		protected readonly threadId: number | undefined,
		private _reference: number | undefined,
		private readonly id: string,
		public namedVariables: number | undefined = 0,
		public indexedVariables: number | undefined = 0,
		public memoryReference: string | undefined = undefined,
		private startOfVariables: number | undefined = 0,
		public presentationHint: DebugProtocol.VariablePresentationHint | undefined = undefined
	) { }