@java.lang.Override
    public com.google.storagetransfer.v1.proto.TransferTypes.PosixFilesystem getPosixDataSource() {
      if (dataSourceCase_ == 14) {
        return (com.google.storagetransfer.v1.proto.TransferTypes.PosixFilesystem) dataSource_;
      }
      return com.google.storagetransfer.v1.proto.TransferTypes.PosixFilesystem.getDefaultInstance();
    }
<pre>
A POSIX Filesystem data source.
</pre>

<code>.google.storagetransfer.v1.PosixFilesystem posix_data_source = 14;</code>

@return The posixDataSource.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java