import net.sf.saxon.functions.FunctionLibrary; //导入依赖的package包/类
private <R> List<R> lookupFunctions(FunctionLibraryList fll, FunctionExtractor<R> ext) {
	List<R> fl = new ArrayList<>();
	for (FunctionLibrary lib: fll.getLibraryList()) {
		logger.trace("lookupFunctions; function library: {}; class: {}", lib.toString(), lib.getClass().getName());
		if (lib instanceof FunctionLibraryList) {
			fl.addAll(lookupFunctions((FunctionLibraryList) lib, ext));
		//} else if (lib instanceof ExecutableFunctionLibrary) {
		//	ExecutableFunctionLibrary efl = (ExecutableFunctionLibrary) lib;
		//	Iterator<UserFunction> itr = efl.iterateFunctions();
		//	while (itr.hasNext()) {
		//		fl.add(getFunctionDeclaration(itr.next()));
		//	}
		} else if (lib instanceof XQueryFunctionLibrary) {
			XQueryFunctionLibrary xqfl = (XQueryFunctionLibrary) lib;
			Iterator<XQueryFunction> itr = xqfl.getFunctionDefinitions();
			while (itr.hasNext()) {
				XQueryFunction fn = itr.next();
				logger.trace("lookupFunctions; fn: {}", fn.getDisplayName());
				R result = ext.extractFunction(fn.getUserFunction());
				if (result != null) {
					fl.add(result);
				}
			}
		}
	}
	return fl;
}
 

import net.sf.saxon.functions.FunctionLibrary; //导入依赖的package包/类
@Override
public FunctionLibrary getFunctionLibrary() {
  return new FunctionLibraryWrapper(myElement);
}
 

import net.sf.saxon.functions.FunctionLibrary; //导入依赖的package包/类
public FunctionLibrary copy() {
  return this;
}
 

import net.sf.saxon.functions.FunctionLibrary; //导入依赖的package包/类
@Override
public FunctionLibrary getFunctionLibrary() {
    return original.getFunctionLibrary();
}
 

import net.sf.saxon.functions.FunctionLibrary; //导入依赖的package包/类
public FunctionLibrary copy() {
    return new TEFunctionLibrary(config, index);
}