How to use the @nebular/theme.NbDialogModule.forRoot function in @nebular/theme

BrowserAnimationsModule,
    NbThemeModule.forRoot({ name: 'cosmic' }),
    NbLayoutModule,
    NbEvaIconsModule,
    NbSidebarModule.forRoot(), // NbSidebarModule.forRoot(), //if this is your app.module
    NbButtonModule,
    NbActionsModule,
    NbSearchModule,
    NbIconModule,
    NbMenuModule.forRoot(),
    NbTooltipModule,
    NbCardModule,
    NbInputModule,
    NbCheckboxModule,
    NbSelectModule,
    NbDialogModule.forRoot(),
    NgxMaskModule.forRoot(),
    NbToastrModule.forRoot(),
    ReactiveFormsModule,
    NbAlertModule,
    FormlyModule.forRoot(),
    NbDatepickerModule.forRoot(),
    FormlyBootstrapModule,
    Ng2FittextModule,
    NgBootstrapFormValidationModule.forRoot(),
  ],
  providers: [
    ElectronService, 
    NbMenuService, 
    NbDialogService, 
    AccountsService, 
    NbDatepickerDirective,

DialogHasBackdropComponent,
    DialogResultComponent,
    DialogScrollComponent,
    DialogShowcaseComponent,
    DialogTemplateComponent,
    AutoFocusDialogComponent,
    BackdropClickDialogComponent,
    EscDialogComponent,
    HasBackdropDialogComponent,
    DialogNamePromptComponent,
    ScrollDialogComponent,
    ShowcaseDialogComponent,
  ],
  imports: [
    CommonModule,
    NbDialogModule.forRoot(),
    NbButtonModule,
    NbInputModule,
    NbCardModule,
    DialogRoutingModule,
  ],
  entryComponents: [
    AutoFocusDialogComponent,
    BackdropClickDialogComponent,
    EscDialogComponent,
    HasBackdropDialogComponent,
    DialogNamePromptComponent,
    ScrollDialogComponent,
    ShowcaseDialogComponent,
  ],
})
export class DialogModule {}

} from '@nebular/theme';

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    HttpClientModule,
    AppRoutingModule,

    ThemeModule.forRoot(),

    NbSidebarModule.forRoot(),
    NbMenuModule.forRoot(),
    NbDatepickerModule.forRoot(),
    NbDialogModule.forRoot(),
    NbWindowModule.forRoot(),
    NbToastrModule.forRoot(),
    NbChatModule.forRoot({
      messageGoogleMapKey: 'AIzaSyA_wNuCzia92MAmdLRzmqitRGvCF7wCZPY',
    }),
    CoreModule.forRoot(),
  ],
  bootstrap: [AppComponent],
  providers: [
    { provide: APP_BASE_HREF, useValue: '/' },
  ],
})
export class AppModule {
}

DialogHasBackdropComponent,
    DialogResultComponent,
    DialogScrollComponent,
    DialogShowcaseComponent,
    DialogTemplateComponent,
    AutoFocusDialogComponent,
    BackdropClickDialogComponent,
    EscDialogComponent,
    HasBackdropDialogComponent,
    DialogNamePromptComponent,
    ScrollDialogComponent,
    ShowcaseDialogComponent,
  ],
  imports: [
    CommonModule,
    NbDialogModule.forRoot(),
    NbCardModule,
    DialogRoutingModule,
  ],
  entryComponents: [
    AutoFocusDialogComponent,
    BackdropClickDialogComponent,
    EscDialogComponent,
    HasBackdropDialogComponent,
    DialogNamePromptComponent,
    ScrollDialogComponent,
    ShowcaseDialogComponent,
  ],
})
export class DialogModule {}

DialogHasBackdropComponent,
    DialogResultComponent,
    DialogScrollComponent,
    DialogShowcaseComponent,
    DialogTemplateComponent,
    AutoFocusDialogComponent,
    BackdropClickDialogComponent,
    EscDialogComponent,
    HasBackdropDialogComponent,
    DialogNamePromptComponent,
    ScrollDialogComponent,
    ShowcaseDialogComponent,
  ],
  imports: [
    CommonModule,
    NbDialogModule.forRoot(),
    NbButtonModule,
    NbInputModule,
    NbCardModule,
    DialogRoutingModule,
  ],
  entryComponents: [
    AutoFocusDialogComponent,
    BackdropClickDialogComponent,
    EscDialogComponent,
    HasBackdropDialogComponent,
    DialogNamePromptComponent,
    ScrollDialogComponent,
    ShowcaseDialogComponent,
  ],
})
export class DialogModule {}

useFactory: (HttpLoaderFactory),
        deps: [HttpClient]
      }
    }),
    NgbModule,
    BrowserAnimationsModule,
    NbThemeModule.forRoot({ name: 'dark' }),
    NbLayoutModule,
    NbEvaIconsModule,
    NbWindowModule.forRoot({
      closeOnBackdropClick: true
    }),
    NbSpinnerModule,
    NbButtonModule,
    NbIconModule,
    NbDialogModule.forRoot(),
  ],
  providers: [ElectronService],
  bootstrap: [AppComponent],
  entryComponents: [],
})
export class AppModule { }