Inheritance entity with API Platform Symfony

I have a problem with the Platform API (https://api-platform.com/) when I have an entity that inherits from another entity. For example, Worker entity that inherits from User entity. When I go to the Platform API documentation all the Worker properties appear in the User class

It is better a schema than an explanation. Here are my two entities and the result of the documentation with the problem

/**
* User
*
* @ORM\Table(name="user")
* @ORM\InheritanceType("SINGLE_TABLE")
* @ORM\DiscriminatorColumn(name="discr", type="string")
* @ORM\DiscriminatorMap({"user" = "User", "worker" = "Worker"})
* @ApiResource
*
*/
class User
{
/**
 * @var int
 *
 * @ORM\Column(name="id", type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 */
protected $id;

/**
 * @var string
 *
 * @ORM\Column(name="lastname", type="string", length=255)
 */
protected $lastname;

/**
 * @var string
 *
 * @ORM\Column(name="firstname", type="string", length=255)
 */
protected $firstname;


/**
 * Get id
 *
 * @return int
 */
public function getId()
{
    return $this->id;
}

/**
 * Set lastname
 *
 * @param string $lastname
 * @return User
 */
public function setLastname($lastname)
{
    $this->lastname = $lastname;

    return $this;
}

/**
 * Get lastname
 *
 * @return string
 */
public function getLastname()
{
    return $this->lastname;
}

/**
 * Set firstname
 *
 * @param string $firstname
 * @return User
 */
public function setFirstname($firstname)
{
    $this->firstname = $firstname;

    return $this;
}

/**
 * Get firstname
 *
 * @return string
 */
public function getFirstname()
{
    return $this->firstname;
}
}


/**
* Worker
*
* @ApiResource
*/
class Worker extends User
{

/**
 * @var \DateTime
 *
 * @ORM\Column(name="birthday", type="datetime")
 * @Assert\NotNull()
 * @Assert\DateTime()
 */
private $birthday;

/**
 * @var string
 *
 * @ORM\Column(name="mobilePhone", type="string", length=255, nullable=true)
 */
private $mobilePhone;

/**
 * @return \DateTime
 */
public function getBirthday(): \DateTime
{
    return $this->birthday;
}

/**
 * @param \DateTime $birthday
 */
public function setBirthday(\DateTime $birthday)
{
    $this->birthday = $birthday;
}

/**
 * @return string
 */
public function getMobilePhone(): string
{
    return ($this->mobilePhone == null) ? '' : $this->mobilePhone;
}

/**
 * @param string $mobilePhone
 */
public function setMobilePhone(string $mobilePhone)
{
    $this->mobilePhone = $mobilePhone;
}

}

And here is the problem. We see that the properties of the Worker child class appear in the model of the User class. And that when I test sending the POST method it returns a User entity that contains the properties of the Worker entity