https://www.doctrine-project.org/projects/doctrine-orm/en/latest/reference/xml-mapping.html#defining-inheritance-mappings - [ ] [DiscriminatorColumn](https://www.doctrine-project.org/projects/doctrine-orm/en/latest/reference/attributes-reference.html#attrref_discriminatorcolumn) - [ ] [DiscriminatorMap](https://www.doctrine-project.org/projects/doctrine-orm/en/latest/reference/attributes-reference.html#attrref_discriminatormap) - [ ] [InheritanceType](https://www.doctrine-project.org/projects/doctrine-orm/en/latest/reference/attributes-reference.html#attrref_inheritancetype)
