Merge pull request #7727 from surveyjs/inheritBaseProps-description

Describe `inheritBaseProps`

docs/customize-question-types-create-specialized-question-types.md

@@ -26,7 +26,7 @@ If you [add this question to the Toolbox](/Documentation/Survey-Creator?id=toolb
 - If the question needs modifications (for example, if the server URL has changed), end users have to modify every created instance of this question individually.
 - In the JSON schema, your custom question looks like a regular Dropdown question.
 
-To avoid these drawbacks, use a different approach: add your custom question type to the survey's `ComponentCollection`:
+To avoid these drawbacks, use a different approach: add your [custom question type](https://surveyjs.io/form-library/documentation/api-reference/icustomquestiontypeconfiguration) to the survey's `ComponentCollection`:
 
 ```js
 Survey.ComponentCollection.Instance.add({
@@ -43,7 +43,9 @@ Survey.ComponentCollection.Instance.add({
     "choicesByUrl": {
       "url": "https://surveyjs.io/api/CountriesExample",
     }
-  }
+  },
+  // Inherit all or individual properties from the base question type
+  inheritBaseProps: true // or [ "allowClear" ]
 });
 ```
 

src/question_custom.ts

@@ -82,6 +82,15 @@ export interface ICustomQuestionTypeConfiguration {
    * ```
    */
   defaultQuestionTitle?: any;
+  /**
+   * An array of property names to inherit from a base question or a Boolean value that specifies whether or not to inherit all properties.
+   *
+   * Default value: `false`
+   *
+   * When you create a [custom specialized question type](https://surveyjs.io/form-library/documentation/customize-question-types/create-specialized-question-types), you base it on another question type configured within the [`questionJSON`](#questionJSON) object. If the custom question type should inherit all properties from the base type, set the `inheritBaseProps` property to `true`. If you want to inherit only certain properties, set the `inheritBaseProps` property to an array of their names.
+   *
+   * [Create Specialized Question Types](https://surveyjs.io/form-library/documentation/customize-question-types/create-specialized-question-types (linkStyle))
+   */
   inheritBaseProps?: false | true | Array<string>;
   /**
    * A function that is called when the custom question is created. Use it to access questions nested within a [composite question type](https://surveyjs.io/form-library/documentation/customize-question-types/create-composite-question-types).