XdmNode pipedoc = pipeline.read();
XdmNode piperoot = S9apiUtils.getDocumentElement(pipedoc);
XProcRuntime innerRuntime = new XProcRuntime(runtime);
innerRuntime.resetExtensionFunctions();
QName stepName = getOption(_step, (QName) null);
XPipeline pipeline = null;
if (XProcConstants.p_pipeline.equals(piperoot.getNodeName())
|| XProcConstants.p_declare_step.equals(piperoot.getNodeName())) {