GitHub user flomickl added a comment to the discussion: Cannot remove values 
from event stream without breaking pipeline stream

so do I have to adjust the output strategy other than .keep() or append()  if I 
use
`event.removeFieldBySelector`

```
...
public void onInvocation ...
        .outputStrategy(
            OutputStrategies.append(
                PrimitivePropertyBuilder
                    .create(Datatypes.String, GEOMETRY_RUNTIME)
                    
.domainProperty("http://www.opengis.net/ont/geosparql#Geometry";)
                    .build()
            )
        )
...

public void onEvent

...
event.removeFieldBySelector(latitudeMapper);
event.removeFieldBySelector(longitudeMapper);
 event.addField(GEOMETRY_RUNTIME, geom.toString());
...
```

GitHub link: 
https://github.com/apache/streampipes/discussions/1276#discussioncomment-5000771

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