refactor: continue to refactor the imagecollection methods

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (c4d1902) 34.18% compared to head (145c30d) 34.59%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #181 +/- ## ========================================== + Coverage 34.18% 34.59% +0.41% ========================================== Files 53 53 Lines 2937 2931 -6 Branches 298 298 ========================================== + Hits 1004 1014 +10 + Misses 1930 1914 -16 Partials 3 3 ```

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