code: public PythonDataStream socket_text_stream(String host, int port) {
  		return new PythonDataStream<>(env.socketTextStream(host, port).map(new AdapterMap<String>()));
  	}
docs: A thin wrapper layer over {@link StreamExecutionEnvironment#socketTextStream(java.lang.String, int)}.
  
  @param host The host name which a server socket binds
  @param port The port number which a server socket binds. A port number of 0 means that the port number is automatically
  allocated.
  @return A python data stream containing the strings received from the socket