`null` values returned in the lambda are converted to empty `Optional`s in the `map` method: https://developer.android.com/reference/java/util/Optional#map(java.util.function.Function%3C?%20super%20T,%20?%20extends%20U%3E) |
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| .. | ||
| schemas/org.schabi.newpipe.database.AppDatabase | ||
| src | ||
| build.gradle | ||
| proguard-rules.pro | ||