auth/app/src/main/java/com/google/firebase/quickstart/auth/java/MultiFactorSignInFragment.java [82:90]:
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        for (int i = 0; i < multiFactorInfoList.size(); ++i) {
            PhoneMultiFactorInfo phoneMultiFactorInfo = (PhoneMultiFactorInfo) multiFactorInfoList.get(i);
            Button button = phoneFactorButtonList.get(i);
            button.setVisibility(View.VISIBLE);
            button.setText(phoneMultiFactorInfo.getPhoneNumber());
            button.setClickable(true);
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
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auth/app/src/main/java/com/google/firebase/quickstart/auth/java/MultiFactorUnenrollFragment.java [55:63]:
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        for (int i = 0; i < multiFactorInfoList.size(); ++i) {
            PhoneMultiFactorInfo phoneMultiFactorInfo = (PhoneMultiFactorInfo) multiFactorInfoList.get(i);
            Button button = phoneFactorButtonList.get(i);
            button.setVisibility(View.VISIBLE);
            button.setText(phoneMultiFactorInfo.getPhoneNumber());
            button.setClickable(true);
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
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