public java.lang.String getGatewayIp() {
      java.lang.Object ref = gatewayIp_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        gatewayIp_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
<pre>
The IP address of the gateway of this subnet.
Must fall within the IP prefix defined above.
</pre>

<code>string gateway_ip = 8;</code>

@return The gatewayIp.
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/Subnet.java