src/vs/editor/common/model/textModel.ts/DidChangeDecorationsEmitter/doFire
class DidChangeDecorationsEmitter:	private doFire() {
		this.handleBeforeFire(this._affectedInjectedTextLines);

		const event: IModelDecorationsChangedEvent = {
			affectsMinimap: this._affectsMinimap,
			affectsOverviewRuler: this._affectsOverviewRuler
		};
		this._shouldFireDeferred = false;
		this._affectsMinimap = false;
		this._affectsOverviewRuler = false;
		this._actual.fire(event);
	}