ADF 12c Groovy Expression to get Primary Key from Sequence to EO

<Attribute
    Name="LnId"
    ColumnName="LN_ID"
    SQLType="NUMERIC"
    Type="java.math.BigDecimal"
    ColumnType="NUMBER"
    TableName="ABC_TABLE"
    PrimaryKey="true"
    IsEffectiveDateSequenceFlag="true">
    <TransientExpression
      trustMode="trusted"><![CDATA[(new oracle.jbo.server.SequenceImpl("SEQ_NAME", object.getDBTransaction())).
getSequenceNumber()]]></TransientExpression>
  </Attribute>