Rename _updateSourceSink to updateSourceSink for outside access

Reviewed-on: #4

src/specificClass.js

@@ -509,7 +509,7 @@ class Machine {
     this.logger.debug(`Flow update: ${value} at ${position} from ${context.childName || 'child'}`);
 
     if (this.upstreamSource && this.downstreamSink) {
-      this._updateSourceSink();
+      this.updateSourceSink();
     }
     
     // Store in parent's measurement container
@@ -521,7 +521,7 @@ class Machine {
     }
   }
 
-  _updateSourceSink() {
+  updateSourceSink() {
     // Handles flow according to the configured "flow number"
     this.logger.debug(`Updating source-sink pair: ${this.upstreamSource.config.functionality.softwareType} - ${this.downstreamSink.config.functionality.softwareType}`);
     this.downstreamSink.setInfluent = this.upstreamSource.getEffluent[this.config.flowNumber];