src/vs/workbench/contrib/debug/common/breakpoints.ts/Breakpoints/constructor
class Breakpoints:	constructor(
		private readonly breakpointContribution: IBreakpointContribution,
		@IContextKeyService private readonly contextKeyService: IContextKeyService,
	) {
		this.breakpointsWhen = typeof breakpointContribution.when === 'string' ? ContextKeyExpr.deserialize(breakpointContribution.when) : undefined;
	}