in src/main/java/org/apache/sling/pipes/internal/WritePipe.java [231:243]
void managePropertiesToRemove() throws RepositoryException {
if (propertiesToRemove != null && !propertiesToRemove.isEmpty()) {
for (Resource propertyResource : propertiesToRemove) {
logger.info("removing {}", propertyResource.getPath());
if (!isDryRun()) {
Property property = propertyResource.adaptTo(Property.class);
if (property != null) {
property.remove();
}
}
}
}
}