Also reported for annotations:

@Entity
@Table(uniqueConstraints = {@UniqueConstraint(columnNames={"identification"})})
public class Class1 { ...}

@Entity
@Table(uniqueConstraints = {@UniqueConstraint(columnNames={"id2"})})
public class Class2 { ...}

Results in:

alter table Class1 add constraint key1 unique (identification)    
alter table Class2 add constraint key1 unique (id2)

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