public class TransformationFunctionCollector implements OperationFunctionCollector {
@Override
public OperationFunctions collect(OperationPipeline pipeline) {
List<Function> funcs = Lists.newArrayList();
TransformationId tfId = null;
TransformationPipelineBrowser browser = new TransformationPipelineBrowser(pipeline);
Transformation tf = browser.getTransformation();
if (tf != null) {
funcs.add(tf);
tfId = tf.getID();