Add a ConfigHelper

backend-services/feed-service/app/models/MongoDBClient.scala

 package models
 
-import com.typesafe.config.{Config, ConfigFactory}
+import utils.ConfigHelper
 
 import org.mongodb.scala.{MongoClient, MongoDatabase, MongoCollection, Document, FindObservable, Observer, Observable}
 import org.mongodb.scala.model.{Filters, Projections, Sorts}
@@ -17,12 +17,7 @@ import scala.util.{Success, Failure, Try}
  * @constructor Creates a new instance of the MongoDBClient class.
  */
 class MongoDBClient {
-    // Loads the default configuration
-    private val applicationConfig: Config = ConfigFactory.load("application.conf")
-    private val referenceConfig: Config = ConfigFactory.parseResources("reference.conf")
-    private val config: Config = referenceConfig.withFallback(applicationConfig).resolve()
-
-    private val mongoUri = config.getString("mongodb.uri")
+    private val mongoUri = ConfigHelper.getString("mongodb.uri")
 
     // Connects to a MongoDB Client when class is constructed
     private var client: MongoClient = this.connect()

backend-services/feed-service/app/utils/ConfigHelper.scala

+package utils
+
+import com.typesafe.config.{Config, ConfigFactory}
+
+object ConfigHelper {
+  private val applicationConfig: Config = ConfigFactory.load("application.conf")
+  private val referenceConfig: Config = ConfigFactory.parseResources("reference.conf")
+  private val config: Config = referenceConfig.withFallback(applicationConfig).resolve()
+
+  def getString(key: String): String = config.getString(key)
+}