add getCurrent for CurrentSource again

Former-commit-id: f2569515

Source/Components/CurrentSource.cpp

@@ -19,3 +19,7 @@ void CurrentSource::applyRightSideVectorStamp(SystemModel& system) {
 void CurrentSource::step(SystemModel& system, Real time) {
 	this->applyRightSideVectorStamp(system);
 }
+
+Complex CurrentSource::getCurrent(SystemModel &system) {
+	return Complex(currentr, currenti);
+}

Source/Components/CurrentSource.h

@@ -19,6 +19,7 @@ namespace DPsim {
 		void applyRightSideVectorStamp(SystemModel& system);
 		void step(SystemModel& system, Real time);
 		void postStep(SystemModel& system) { }
+		Complex getCurrent(SystemModel& system);
 	};
 }
 #endif