private void ensureNetworkTagsIsMutable() {
      if (!networkTags_.isModifiable()) {
        networkTags_ = new com.google.protobuf.LazyStringArrayList(networkTags_);
      }
      bitField0_ |= 0x00000020;
    }
<pre>
The machine type to create the VM with.
</pre>

<code>string machine_type = 5;</code>

@param value The bytes for machineType to set.
@return This builder for chaining.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ComputeEngineTargetDefaults.java