docs: update return type in jsdoc for Buffers

src/v1beta1/doc/google/cloud/automl/v1beta1/doc_data_items.js

@@ -19,7 +19,7 @@
  * A representation of an image.
  * Only images up to 30MB in size are supported.
  *
- * @property {string} imageBytes
+ * @property {Buffer} imageBytes
  *   Image content represented as a stream of bytes.
  *   Note: As with all `bytes` fields, protobuffers use a pure binary
  *   representation, whereas JSON representations use base64.

src/v1beta1/doc/google/protobuf/doc_any.js

@@ -125,7 +125,7 @@
  *   Schemes other than `http`, `https` (or the empty scheme) might be
  *   used with implementation specific semantics.
  *
- * @property {string} value
+ * @property {Buffer} value
  *   Must be a valid serialized protocol buffer of the above specified type.
  *
  * @typedef Any

synth.metadata

@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-06-11T11:08:55.702382Z",
+  "updateTime": "2019-06-12T11:09:38.816612Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.24.0",
-        "dockerImage": "googleapis/artman@sha256:ce425884865f57f18307e597bca1a74a3619b7098688d4995261f3ffb3488681"
+        "version": "0.24.1",
+        "dockerImage": "googleapis/artman@sha256:6018498e15310260dc9b03c9d576608908ed9fbabe42e1494ff3d827fea27b19"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "744feb9660b3194fcde37dea50038bde204f3573",
-        "internalRef": "252553801"
+        "sha": "f117dac435e96ebe58d85280a3faf2350c4d4219",
+        "internalRef": "252714985"
       }
     },
     {