Emotion Identification Using Face API In Android App

Previously Emotion API is included in Azure Cognitive Service but now not anymore. Only Face API is available for the function of facial emotion detection. I have problem sync the tutorial available for this case. Many tutorial shown were discussed based on Emotion API but none on the Face API for the emotion detection process. I want to develop a mobile application that detects facial emotion based on face feature. Please help me on this especially on how to use the Azure Face API directly in Android Studio.