src/vs/editor/contrib/snippet/snippetVariables.ts/SelectionBasedVariableResolver/constructor
class SelectionBasedVariableResolver:	constructor(
		private readonly _model: ITextModel,
		private readonly _selection: Selection,
		private readonly _selectionIdx: number,
		private readonly _overtypingCapturer: OvertypingCapturer | undefined
	) {
		//
	}