Navis Ryu

``` {"name": "ci_profile", "typeName": "struct(base:boolean,life_style:string,segment:string,shopping_channel:string,family:struct(fmly_memb_cnt:int,hhld_memb_cnt:int,child_y:boolean,adult_child_y:boolean,married:boolean))"} ``` or ``` {"name": "ci_profile", "typeExpression": { "base": "boolean", "life_style" : "string", "segment" : "string", "shopping_channel" : "string", "family": { "fmly_memb_cnt": "int", "hhld_memb_cnt": "int", "child_y":...

expect good reduction of memory footprint

Regression from #4008

``` { "name": "ci_profile", "typeName": "struct( base:boolean, life_style:string, segment:string, shopping_channel:string, family:struct(fmly_memb_cnt:int,hhld_memb_cnt:int,child_y:boolean,adult_child_y:boolean,married:boolean) )" }, ```

use nulls as values if all values are false or null