public com.google.protobuf.ByteString getDiskTypeBytes() {
          java.lang.Object ref = diskType_;
          if (ref instanceof String) {
            com.google.protobuf.ByteString b =
                com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
            diskType_ = b;
            return b;
          } else {
            return (com.google.protobuf.ByteString) ref;
          }
        }
<pre>
Optional. Type of the disk to use. Defaults to `"pd-standard"`.
</pre>

<code>string disk_type = 1 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for diskType.
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java