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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1236 | * |
| 1237 | * This contains the data describing the API. This includes information |
| 1238 | * about supported authentication schemes, supported namespaces, routes |
| 1239 | * available on the API, and a small amount of data about the site. |
| 1240 | * |
| 1241 | * @since 4.4.0 |
| 1242 | * |
| 1243 | * @param WP_REST_Response $response Response data. |
| 1244 | */ |
| 1245 | return apply_filters( 'rest_index', $response ); |
| 1246 | } |
| 1247 | |
| 1248 | /** |
| 1249 | * Adds a link to the active theme for users who have proper permissions. |
| 1250 | * |
| 1251 | * @since 5.7.0 |
| 1252 | * |
| 1253 | * @param WP_REST_Response $response REST API response. |
| 1254 | */ |