https://docs.google.com/spreadsheets/d/1H9YymBrAu-ART85fzOKf52umidd1ui-lU4txOpbAC5k/edit#gid=600291584

Map items of a collection at defined indexes e.g.

/Company<0,1,5>/Person<0-9>/fullName -> Person<b>/fullName

=> The target will contain only 30 items from source