val store = HealthDataService.getStore(context)
val requiredPermissions = HashSet(
    listOf(Permission.of(DataTypes.STEPS, AccessType.READ))
)
// Check if permission was already granted:
val grantedPermissions = store.getGrantedPermissions(requiredPermissions)
if (!grantedPermissions.containsAll(requiredPermissions)) {
    //Ask for permission if it was not granted before:
    val requestResult = store.requestPermissions(requiredPermissions, activity)
    if (!requestResult.containsAll(requiredPermissions)) {
        // Process permission denial
    }
}