public SWIGTYPE_p_wchar_t GetExternalReference() { IntPtr cPtr = HCSBSTREAMPINVOKE.BStreamFileToolkit_GetExternalReference__SWIG_0(swigCPtr); SWIGTYPE_p_wchar_t ret = (cPtr == IntPtr.Zero) ? null : new SWIGTYPE_p_wchar_t(cPtr, false); return ret; }