---
# System prepended metadata

title: Question

---

# Question
Implement the function `retrieveAddress` using the methods `getStreet1`, `getStreet2`, and `getStreet3` to create an `Address`.
```scala
case class Address(
  street1: String,
  street2: String,
  street3: String
)
def retrieveAddress: Either[AdressError, Adress] = {
    val street2 = Try(getStreet2).toOption
    val street3 = Try(getStreet3).toOption
    
    Try(getStreet1)
        .toOption
        .map(street1 => Adress(street1, street2, street3))
}

sealed trait AdressError
case object Street1Failure extends AdressError
case object Street2Failure extends AdressError
case object Street3Failure extends AdressError
// =======================================================================  
// LIBRARY METHODS 
// =======================================================================
/**
  * Retrieves the main street address.
  * @throws RuntimeException if empty
  */
def getStreet1: String = {
  // implementation
}
/**
  * Retrieves additional street address line 2.
  * @throws RuntimeException if empty
  */
def getStreet2: String = {
  // implementation
}
/**
  * Retrieves additional street address line 3.
  * @throws RuntimeException if empty
  */
def getStreet3: String = {
  // implementation
}