public virtual string CallA()
{
string ret = CSharpWrapperPINVOKE.B_CallA(swigCPtr);
if (CSharpWrapperPINVOKE.SWIGPendingException.Pending)
{
throw CSharpWrapperPINVOKE.SWIGPendingException.Retrieve();
}
return(ret);
}