如何检索Spring Data的PersistentEntity？

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

import javax.persistence.Entity;
import javax.persistence.Id;

@Entity
public class User {
    @Id
    private Long id;
    private String name;
    // 其他属性和方法
}

import org.springframework.data.repository.Repository;
import org.springframework.data.repository.query.QueryByExampleExecutor;

public interface UserRepository extends Repository<User, Long>, QueryByExampleExecutor<User> {
    // 自定义查询方法
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mapping.context.MappingContext;
import org.springframework.stereotype.Component;

@Component
public class MyComponent {
    private MappingContext<?, ?> mappingContext;

    @Autowired
    public MyComponent(MappingContext<?, ?> mappingContext) {
        this.mappingContext = mappingContext;
    }

    public void retrievePersistentEntity() {
        PersistentEntity<?, ?> persistentEntity = mappingContext.getPersistentEntity(User.class);
        // 对PersistentEntity进行操作
    }
}