feat(elements): injector create (#22413)

PR Close #22413

aio/src/app/custom-elements/code/code-example.component.spec.ts

@@ -30,7 +30,7 @@ describe('CodeExampleComponent', () => {
   });
 
   it('should be able to capture the code snippet provided in content', () => {
-    expect(codeExampleComponent.code.trim()).toBe(`const foo = "bar";`);
+    expect(codeExampleComponent.aioCode.code.trim()).toBe(`const foo = "bar";`);
   });
 
   it('should change aio-code classes based on title presence', () => {

aio/src/app/custom-elements/code/code-example.component.ts

@@ -34,8 +34,6 @@ import { CodeComponent } from './code.component';
 export class CodeExampleComponent implements AfterViewInit {
   classes: {};
 
-  code: string;
-
   @Input() language: string;
 
   @Input() linenums: string;