BRFplus :: How to read decision table data in internal table?

Hi Experts ,

I have a requirement , where I want to read complete decision table in internal table whenever user tries to maintain that particular decision table.

So before maintaining values in the decision table, take backup of decision table into internal table and send mail with attachment.

I have already gone through the available links where it is mentioned to implement interface IF_FDT_DECISION_TABLE~GET_TABLE_DATA.

But I need help on how to write code to read data in internal table using GET_TABLE_DATA method.

Please help with the sample code to read decision table into an internal table.Thanks.