encapsulated operator function '+'
import StateSpace = Modelica_LinearSystems2.Internal.StateSpace2;
input StateSpace ss1 "System 1";
input StateSpace ss2 "System 2 is added in parallel to system 1";
output StateSpace result(redeclare Real A[size(ss1.A, 1) + size(ss2.A, 1), size(ss1.A, 2) + size(ss2.A, 2)], redeclare Real B[size(ss1.B, 1) + size(ss2.B, 1), size(ss1.B, 2)], redeclare Real C[size(ss1.C, 1), size(ss1.C, 2) + size(ss2.C, 2)], redeclare Real D[size(ss1.D, 1), size(ss1.D, 2)]) "= ss1 + ss2";
end '+';