fix nesteds

Author: GoodDayForSurf

packages/devextreme-angular/src/tokens/index.ts

@@ -1,6 +1,5 @@
 import { InjectionToken } from '@angular/core';
 
-export const PROPERTY_TOKEN_center = new InjectionToken<string>('property-token-center');
 export const PROPERTY_TOKEN_items = new InjectionToken<string>('property-token-items');
 export const PROPERTY_TOKEN_buttons = new InjectionToken<string>('property-token-buttons');
 export const PROPERTY_TOKEN_toolbarItems = new InjectionToken<string>('property-token-toolbarItems');
@@ -41,3 +40,4 @@ export const PROPERTY_TOKEN_resources = new InjectionToken<string>('property-tok
 export const PROPERTY_TOKEN_views = new InjectionToken<string>('property-token-views');
 export const PROPERTY_TOKEN_layers = new InjectionToken<string>('property-token-layers');
 export const PROPERTY_TOKEN_legends = new InjectionToken<string>('property-token-legends');
+export const PROPERTY_TOKEN_center = new InjectionToken<string>('property-token-center');

packages/devextreme-angular/src/ui/drop-down-box/index.ts

@@ -85,6 +85,7 @@ import { DxiDropDownBoxToolbarItemModule } from 'devextreme-angular/ui/drop-down
 import { 
       PROPERTY_TOKEN_buttons,
       PROPERTY_TOKEN_toolbarItems,
+      PROPERTY_TOKEN_items,
 } from 'devextreme-angular/tokens';
 
 
@@ -126,6 +127,11 @@ export class DxDropDownBoxComponent extends DxComponent implements OnDestroy, Co
         this._setChildren('toolbarItems', value);
     }
 
+    @ContentChildren(PROPERTY_TOKEN_items)
+    set _itemsNestedItems(value: QueryList<CollectionNestedOption>) {
+        this._setChildren('items', value);
+    }
+
     instance: DxDropDownBox = null;
 
     /**

packages/devextreme-angular/src/ui/map/index.ts

@@ -59,6 +59,7 @@ import {
       PROPERTY_TOKEN_markers,
       PROPERTY_TOKEN_routes,
       PROPERTY_TOKEN_locations,
+      PROPERTY_TOKEN_center,
 } from 'devextreme-angular/tokens';
 
 
@@ -98,6 +99,11 @@ export class DxMapComponent extends DxComponent implements OnDestroy, OnChanges,
         this._setChildren('locations', value);
     }
 
+    @ContentChildren(PROPERTY_TOKEN_center)
+    set _centerNestedItems(value: QueryList<CollectionNestedOption>) {
+        this._setChildren('center', value);
+    }
+
     instance: DxMap = null;
 
     /**