public Builder clearHostname() {
      hostname_ = getDefaultInstance().getHostname();
      bitField0_ = (bitField0_ & ~0x00000008);
      onChanged();
      return this;
    }
<pre>
Required. Fully-qualified domain name (FQDN) or IP Address of the logging
server.
</pre>

<code>string hostname = 5 [(.google.api.field_behavior) = REQUIRED];</code>

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