https://developers.google.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/CustomRoutesOptions.Builder?authuser=4
CustomRoutesOptions.Builder | Navigation SDK for Android | Google for Developers
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https://developers-dot-devsite-v2-prod.appspot.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/CustomRoutesOptions?authuser=1
CustomRoutesOptions | Navigation SDK for Android | Google for Developers
navigation sdk for androidgoogledevelopers