Simplify child registration error handling

src/specificClass.js

@@ -79,6 +79,11 @@ class Machine {
 
   /*-------------------               Register child events               -------------------*/
   registerChild(child, softwareType) {
+    if(!child) {
+      this.logger.error(`Invalid ${softwareType} child provided.`);
+      return;
+    }
+
     switch (softwareType) {
       case "measurement":
         this.logger.debug(`Registering measurement child...`);
@@ -95,11 +100,6 @@ class Machine {
   }
 
   _connectMeasurement(measurementChild) {
-    if (!measurementChild) {
-      this.logger.error("Invalid measurement provided.");
-      return;
-    }
-
     const position = measurementChild.config.functionality.positionVsParent;
     const distance = measurementChild.config.functionality.distanceVsParent || 0;
     const measurementType = measurementChild.config.asset.type;
@@ -137,11 +137,6 @@ class Machine {
   }
 
   _connectReactor(reactorChild) {
-    if (!reactorChild) {
-      this.logger.error("Invalid measurement provided.");
-      return;
-    }
-
     this.downstreamReactor = reactorChild; // downstream from the pumps perpective
   }