chore(gatsby): add getCache helper to NodePluginArgs (#33984)

Co-authored-by: Lennart <[email protected]>

Author: gabxyz

packages/gatsby/index.d.ts

@@ -1038,6 +1038,13 @@ export interface NodePluginArgs {
    */
   cache: GatsbyCache
 
+  /**
+   * Get cache instance by name - this should only be used by plugins that accept subplugins.
+   * @param id id of the node
+   * @returns See [cache](https://www.gatsbyjs.com/docs/reference/config-files/node-api-helpers/#cache) section for reference.
+   */
+  getCache(this: void, id: string): GatsbyCache
+
   /**
    * Utility function useful to generate globally unique and stable node IDs.
    * It will generate different IDs for different plugins if they use same

packages/gatsby/src/utils/api-node-helpers-docs.js

@@ -159,7 +159,7 @@ const GatsbyTracing = {
 /**
  * Get cache instance by name - this should only be used by plugins that
  * accept subplugins.
- * @param {string} id Test
+ * @param {string} id id of the node
  * @returns {GatsbyCache} See [`cache`](#cache) section for reference.
  */
 module.exports.getCache = true;