Having problem where seem to not be able to ADD analysis engines (AEs) in piper files (as described in the docs: https://cwiki.apache.org/confluence/display/CTAKES/Piper+Files).
It seems like the main difference, looking at the first few lines of the raw xmi of these AEs (in say google chrome) as compared to existing piper files (eg. those in $CTAKES_HOME/resources/org/apache/ctakes/examples/pipeline), is that the AEs that can be added to a piper file have the <primitive> tag set to "true" (while those AEs that throw an error wen added to a piper have these tags as "false"). My question then is: what does this mean? How are these AEs ever to be used in a piper file, then? Is there functionality expected to be subsumed in an existing AE xmi file in the same directory or something (eg. how could I use the desc/ctakes-clinical-pipeline/desc/analysis_engine/AggregatePlaintextFastUMLSProcessor.xml in a piper file)? Is there documentation that could explain this a bit more? Thank you.
