diff --git a/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-paged-response-data.function.ts b/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-paged-response-data.function.ts
index 88e5638b9b..2bbe8730d6 100644
--- a/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-paged-response-data.function.ts
+++ b/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-paged-response-data.function.ts
@@ -1,6 +1,23 @@
 import { DataSourceResponse, UmbPagedData } from '../index.js';
 import { Diff } from '@umbraco-cms/backoffice/utils';
 
+/**
+ * This function extends the data set of a paged DataSourceResponse.
+ * Provide the desired type as a generic type parameter.
+ * This will require the appendData argument to fill in the missing properties of the items.
+ * @param response {DataSourceResponse<UmbPagedData<object>>}
+ * @param appendData {object} Additional properties to append to the data set.
+ * @returns {DataSourceResponse<UmbPagedData<object>>}
+ *
+ * @example
+ *
+ * type originalResponseType = { foo: string };
+ * type extendedResponseType = { foo: string, bar: string };
+ *
+ * const extendedResponse = extendDataSourcePagedResponseData<extendedResponseType>(originalResponse, { bar: 'some additional data' });
+ *
+ * extendedResponse.data.items[0].bar is now equal to 'some additional data'
+ */
 export function extendDataSourcePagedResponseData<
 	ExtendedDataType extends IncomingDataType,
 	IncomingDataType extends object = object,
diff --git a/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-response-data.function.ts b/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-response-data.function.ts
index 2c43336ef0..d962cfe699 100644
--- a/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-response-data.function.ts
+++ b/src/Umbraco.Web.UI.Client/src/shared/repository/data-source/extend-data-source-response-data.function.ts
@@ -1,6 +1,23 @@
 import { DataSourceResponse } from '../index.js';
 import { Diff } from '@umbraco-cms/backoffice/utils';
 
+/**
+ * This function extends the data set of a DataSourceResponse.
+ * Provide the desired type as a generic type parameter.
+ * This will require the appendData argument to fill in the missing properties of the data.
+ * @param response {DataSourceResponse<object>}
+ * @param appendData {object} Additional properties to append to the data.
+ * @returns {DataSourceResponse<object>}
+ *
+ * @example
+ *
+ * type originalResponseType = { foo: string };
+ * type extendedResponseType = { foo: string, bar: string };
+ *
+ * const extendedResponse = extendDataSourceResponseData<extendedResponseType>(originalResponse, { bar: 'some additional data' });
+ *
+ * extendedResponse.data.bar is now equal to 'some additional data'
+ */
 export function extendDataSourceResponseData<
 	ExtendedDataType extends IncomingDataType,
 	IncomingDataType extends object = object,