tmf: Use TmfTraceType.instantiateExperiment() in TmfExperimentElement

This reduces code duplication.

[Changed] Reuse utility TmfTraceType.instantiateExperiment()

Change-Id: Ib0709f8829dbe8663ac70454946864f0e95a33a2
Signed-off-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/org.eclipse.tracecompass/+/202661
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>

tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/project/model/TmfExperimentElement.java

@@ -538,14 +538,9 @@ public TmfExperiment instantiateTrace() {
             // make sure that supplementary folder exists
             refreshSupplementaryFolder();
 
-            if (getTraceType() != null) {
-
-                IConfigurationElement ce = TRACE_TYPE_ATTRIBUTES.get(getTraceType());
-                if (ce == null) {
-                    return null;
-                }
-                TmfExperiment experiment = (TmfExperiment) ce.createExecutableExtension(TmfTraceType.EXPERIMENT_TYPE_ATTR);
-                return experiment;
+            String typeID = getTraceType();
+            if (typeID != null) {
+                return TmfTraceType.instantiateExperiment(typeID);
             }
         } catch (CoreException e) {
             Activator.getDefault().logError(NLS.bind(Messages.TmfExperimentElement_ErrorInstantiatingTrace, getName()), e);