Spring's TypeDescriptor cannot resolve parameterized property type.

gistfile1.java

package com.github.ryoasai;

import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;

import java.util.List;

import org.hamcrest.Matcher;
import org.junit.Test;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.ConfigurablePropertyAccessor;
import org.springframework.beans.PropertyAccessorFactory;
import org.springframework.core.convert.TypeDescriptor;

public class TypeDescriptor_ParameterizedPropertyAccess_Test {
    
    public static Matcher<Class<?>> isSameClassAs(Class<?> clazz) {
        @SuppressWarnings("unchecked") //double cast idiom
        Matcher<Class<?>> result = (Matcher<Class<?>>)(Matcher<?>)is((Object)clazz);
        
        return result;
    }

    static class Parent<T> {
        private List<T> list;
        
        public List<T> getList() {
            return list;
        }
    }
    
    static class Child extends Parent<String> {
        /*
        @Override
        public List<String> getList() {
            return super.getList();
        }*/
    }
    
    @Test
    public void testPropertyAccess() {
        BeanWrapper beanWrapper = PropertyAccessorFactory.forBeanPropertyAccess(new Child());
        TypeDescriptor typeDesc = beanWrapper.getPropertyTypeDescriptor("list");

        assertThat(typeDesc.getType(), isSameClassAs(List.class));
        assertThat(typeDesc.getElementType(), isSameClassAs(String.class)); // failed!

        assertThat(typeDesc.asString(), is("java.util.List<java.lang.String>")); // failed!
        assertThat(typeDesc.isCollection(), is(true));
    }
    
    @Test
    public void testFieldAccess() {
        ConfigurablePropertyAccessor fieldAccessor = PropertyAccessorFactory.forDirectFieldAccess(new Child());
        TypeDescriptor typeDesc = fieldAccessor.getPropertyTypeDescriptor("list");

        assertThat(typeDesc.getType(), isSameClassAs(List.class));
        assertThat(typeDesc.getElementType(), isSameClassAs(String.class)); // failed!

        assertThat(typeDesc.asString(), is("java.util.List<java.lang.String>")); // failed!
        assertThat(typeDesc.isCollection(), is(true));
    }
}