How to programmatically add Type for specific entity fields

I’m looking way to bind Type for specific entity fields during entity manager configuration phase. I need it to be able to apply extra “rules” to target entity field using external source without updating model class itself.

So basically I’m trying to avoid hardcode @Type annotation way as below:

@Type(type = foo.package.MyType, parameters = {
    @Parameter(name = "fooProperty", value = "fooValue")
private String someField;

Instead I would like to set Type for someField during entity manager configuration programmatically.