Reference implementation: https://github.com/kaushikgopal/RxJava-Android-Samples/blob/master/app/src/main/java/com/morihacky/android/rxjava/fragments/DebounceSearchEmitterFragment.java Based on https://github.com/JakeWharton/RxBinding/blob/master/rxbinding/src/main/java/com/jakewharton/rxbinding/widget/RxAutoCompleteTextView.java.
Reference implementation: https://github.com/kaushikgopal/RxJava-Android-Samples/blob/master/app/src/main/java/com/morihacky/android/rxjava/fragments/DebounceSearchEmitterFragment.java
Based on https://github.com/JakeWharton/RxBinding/blob/master/rxbinding/src/main/java/com/jakewharton/rxbinding/widget/RxAutoCompleteTextView.java.