xbean-reflect/src/main/java/org/apache/xbean/recipe/AsmParameterNameLoader.java [165:270]:
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            reader.accept(visitor, 0);

            Map exceptions = visitor.getExceptions();
            if (exceptions.size() == 1) {
                throw new RuntimeException((Exception)exceptions.values().iterator().next());
            }
            if (!exceptions.isEmpty()) {
                throw new RuntimeException(exceptions.toString());
            }

            methodParameters = visitor.getMethodParameters();
        } catch (IOException ex) {
        }

        // Cache the names
        for (Method method : methods) {
            methodCache.put(method, methodParameters.get(method));
        }
        return methodParameters;
    }

    private Method[] getMethods(Class clazz, String methodName) {
        List<Method> methods = new ArrayList<Method>(Arrays.asList(clazz.getMethods()));
        methods.addAll(Arrays.asList(clazz.getDeclaredMethods()));
        List<Method> matchingMethod = new ArrayList<Method>(methods.size());
        for (Method method : methods) {
            if (method.getName().equals(methodName)) {
                matchingMethod.add(method);
            }
        }
        return matchingMethod.toArray(new Method[matchingMethod.size()]);
    }

    private static ClassReader createClassReader(Class declaringClass) throws IOException {
        InputStream in = null;
        try {
            ClassLoader classLoader = declaringClass.getClassLoader();
            in = classLoader.getResourceAsStream(declaringClass.getName().replace('.', '/') + ".class");
            ClassReader reader = new ClassReader(in);
            return reader;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException ignored) {
                }
            }
        }
    }

    private static class AllParameterNamesDiscoveringVisitor extends ClassVisitor {
        private final Map<Constructor,List<String>> constructorParameters = new HashMap<Constructor,List<String>>();
        private final Map<Method,List<String>> methodParameters = new HashMap<Method,List<String>>();
        private final Map<String,Exception> exceptions = new HashMap<String,Exception>();
        private final String methodName;
        private final Map<String,Method> methodMap = new HashMap<String,Method>();
        private final Map<String,Constructor> constructorMap = new HashMap<String,Constructor>();

        public AllParameterNamesDiscoveringVisitor(Class type, String methodName) {
            super(ASM_VERSION);
            this.methodName = methodName;

            List<Method> methods = new ArrayList<Method>(Arrays.asList(type.getMethods()));
            methods.addAll(Arrays.asList(type.getDeclaredMethods()));
            for (Method method : methods) {
                if (method.getName().equals(methodName)) {
                    methodMap.put(Type.getMethodDescriptor(method), method);
                }
            }
        }

        public AllParameterNamesDiscoveringVisitor(Class type) {
            super(ASM_VERSION);
            this.methodName = "<init>";

            List<Constructor> constructors = new ArrayList<Constructor>(Arrays.asList(type.getConstructors()));
            constructors.addAll(Arrays.asList(type.getDeclaredConstructors()));
            for (Constructor constructor : constructors) {
                Type[] types = new Type[constructor.getParameterTypes().length];
                for (int j = 0; j < types.length; j++) {
                    types[j] = Type.getType(constructor.getParameterTypes()[j]);
                }
                constructorMap.put(Type.getMethodDescriptor(Type.VOID_TYPE, types), constructor);
            }
        }

        public Map<Constructor, List<String>> getConstructorParameters() {
            return constructorParameters;
        }

        public Map<Method, List<String>> getMethodParameters() {
            return methodParameters;
        }

        public Map<String,Exception> getExceptions() {
            return exceptions;
        }

        public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
            if (!name.equals(this.methodName)) {
                return null;
            }

            try {
                final List<String> parameterNames;
                final boolean isStaticMethod;
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xbean-reflect/src/main/java/org/apache/xbean/recipe/XbeanAsmParameterNameLoader.java [165:270]:
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            reader.accept(visitor, 0);

            Map exceptions = visitor.getExceptions();
            if (exceptions.size() == 1) {
                throw new RuntimeException((Exception)exceptions.values().iterator().next());
            }
            if (!exceptions.isEmpty()) {
                throw new RuntimeException(exceptions.toString());
            }

            methodParameters = visitor.getMethodParameters();
        } catch (IOException ex) {
        }

        // Cache the names
        for (Method method : methods) {
            methodCache.put(method, methodParameters.get(method));
        }
        return methodParameters;
    }

    private Method[] getMethods(Class clazz, String methodName) {
        List<Method> methods = new ArrayList<Method>(Arrays.asList(clazz.getMethods()));
        methods.addAll(Arrays.asList(clazz.getDeclaredMethods()));
        List<Method> matchingMethod = new ArrayList<Method>(methods.size());
        for (Method method : methods) {
            if (method.getName().equals(methodName)) {
                matchingMethod.add(method);
            }
        }
        return matchingMethod.toArray(new Method[matchingMethod.size()]);
    }

    private static ClassReader createClassReader(Class declaringClass) throws IOException {
        InputStream in = null;
        try {
            ClassLoader classLoader = declaringClass.getClassLoader();
            in = classLoader.getResourceAsStream(declaringClass.getName().replace('.', '/') + ".class");
            ClassReader reader = new ClassReader(in);
            return reader;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException ignored) {
                }
            }
        }
    }

    private static class AllParameterNamesDiscoveringVisitor extends ClassVisitor {
        private final Map<Constructor,List<String>> constructorParameters = new HashMap<Constructor,List<String>>();
        private final Map<Method,List<String>> methodParameters = new HashMap<Method,List<String>>();
        private final Map<String,Exception> exceptions = new HashMap<String,Exception>();
        private final String methodName;
        private final Map<String,Method> methodMap = new HashMap<String,Method>();
        private final Map<String,Constructor> constructorMap = new HashMap<String,Constructor>();

        public AllParameterNamesDiscoveringVisitor(Class type, String methodName) {
            super(ASM_VERSION);
            this.methodName = methodName;

            List<Method> methods = new ArrayList<Method>(Arrays.asList(type.getMethods()));
            methods.addAll(Arrays.asList(type.getDeclaredMethods()));
            for (Method method : methods) {
                if (method.getName().equals(methodName)) {
                    methodMap.put(Type.getMethodDescriptor(method), method);
                }
            }
        }

        public AllParameterNamesDiscoveringVisitor(Class type) {
            super(ASM_VERSION);
            this.methodName = "<init>";

            List<Constructor> constructors = new ArrayList<Constructor>(Arrays.asList(type.getConstructors()));
            constructors.addAll(Arrays.asList(type.getDeclaredConstructors()));
            for (Constructor constructor : constructors) {
                Type[] types = new Type[constructor.getParameterTypes().length];
                for (int j = 0; j < types.length; j++) {
                    types[j] = Type.getType(constructor.getParameterTypes()[j]);
                }
                constructorMap.put(Type.getMethodDescriptor(Type.VOID_TYPE, types), constructor);
            }
        }

        public Map<Constructor, List<String>> getConstructorParameters() {
            return constructorParameters;
        }

        public Map<Method, List<String>> getMethodParameters() {
            return methodParameters;
        }

        public Map<String,Exception> getExceptions() {
            return exceptions;
        }

        public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
            if (!name.equals(this.methodName)) {
                return null;
            }

            try {
                final List<String> parameterNames;
                final boolean isStaticMethod;
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