RealmPrimaryKeyConstraintException. Primary key cannot be changed after the object created.
Primary keys also count as having the
It is allowed to apply this annotation on the following primitive types: byte, short, int, and long.
String, Byte, Short, Integer, and Long are also allowed, and further permitted to have
as a primary key value.
This annotation is not allowed inside Realm classes marked as
\@RealmClass(embedded = true).