server: Add fromHex method to Address object

server/app/com/xsn/explorer/models/Address.scala

@@ -1,8 +1,12 @@
 package com.xsn.explorer.models
 
+import javax.xml.bind.DatatypeConverter
+
 import com.xsn.explorer.models.base.WrappedString
 import play.api.libs.json._
 
+import scala.util.Try
+
 class Address private (val string: String) extends AnyVal with WrappedString
 
 object Address {
@@ -17,6 +21,13 @@ object Address {
     }
   }
 
+  def fromHex(hex: String): Option[Address] = {
+    Try { DatatypeConverter.parseHexBinary(hex) }
+        .map { bytes => new String(bytes) }
+        .toOption
+        .flatMap(from)
+  }
+
   implicit val reads: Reads[Address] = Reads { json =>
     json.validate[String].flatMap { string =>
       from(string)