Is that a good way to get arb data via sterams?

AEGP_StreamValue2 streamVal;
AEGP_EffectRefH effectH = NULL;
AEGP_StreamRefH streamH = NULL;
A_Time timeCompForCurrentFrame = {0,1};

//get effect, stream and value
ERR(suites.PFInterfaceSuite1()->AEGP_GetNewEffectForEffect(G_my_plugin_id, in_data->effect_ref, &effectH));
ERR(suites.StreamSuite5()->AEGP_GetNewEffectStreamByIndex(G_my_plugin_id, effectH, PARM_ARB, &streamH));
ERR(suites.StreamSuite5()->AEGP_GetNewStreamValue(G_my_plugin_id, streamH, AEGP_LTimeMode_CompTime, &timeCompForCurrentFrame, TRUE, &streamVal));

//now I have a handle to arb data

//is the way below good or not for get an arb data from handle?

PF_Handle arbH = reinterpret_cast<PF_Handle>(streamVal.val.arbH);
arbData *arbP = reinterpret_cast<arbDataP>(suites.HandleSuite1()->host_lock_handle(arbH));

suites.StreamSuite5()->AEGP_DisposeStreamValue(&streamVal);

if (streamH) suites.StreamSuite2()->AEGP_DisposeStream(streamH);
if (effectH) suites.EffectSuite2()->AEGP_DisposeEffect(effectH);

So the question is about a part where I took the arbData from stream.val.arbH. Is it a good way?

Do we have any other ways, maybe some suites to extract instead to reinterpret it?

The purpos of my question just to do it in a better and safer way.