public static com.google.cloud.vpcaccess.v1.Connector.Subnet parseFrom(
        com.google.protobuf.ByteString data,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
<pre>
Project in which the subnet exists.
If not set, this project is assumed to be the project for which
the connector create request was issued.
</pre>

<code>string project_id = 2;</code>

@return The bytes for projectId.
java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/Connector.java