code: public PythonDataStream from_collection(Collection<Object> collection) {
  		return new PythonDataStream<>(env.fromCollection(collection).map(new AdapterMap<>()));
  	}
docs: A thin wrapper layer over {@link StreamExecutionEnvironment#fromCollection(java.util.Collection)}
  
  <p>The input {@code Collection} is of type {@code Object}, because it is a collection
  of Python elements. * There type is determined in runtime, by the Jython framework.</p>
  
  @param collection The collection of python elements to create the data stream from.
  @return The data stream representing the given collection