public Builder clearMachineType() {
      machineType_ = getDefaultInstance().getMachineType();
      bitField0_ = (bitField0_ & ~0x00000100);
      onChanged();
      return this;
    }
<pre>
Machine type of VM Instance underlying connector. Default is e2-micro
</pre>

<code>string machine_type = 10;</code>

@return This builder for chaining.
java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/Connector.java