add function mergeObject for API aggregation

[localvar]

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[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (pipeline@0d7a961). Click here to learn what that means.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             pipeline     #664   +/-   ##
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  Coverage            ?   78.71%           
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  Files               ?       93           
  Lines               ?    10096           
  Branches            ?        0           
===========================================
  Hits                ?     7947           
  Misses              ?     1680           
  Partials            ?      469           

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