public Builder clearDiskType() {
          diskType_ = getDefaultInstance().getDiskType();
          bitField0_ = (bitField0_ & ~0x00000001);
          onChanged();
          return this;
        }
<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 This builder for chaining.
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java