@Override
    public void process(boolean validate, boolean documentsOnly) {
        for (DocumentSummary summary : schema.getSummaries().values()) {
            if (summary.name().equals("default")) continue;

            for (SummaryField summaryField : summary.getSummaryFields().values()) {
                assertConsistency(summaryField, schema, validate);
            }
        }
    }
Ensure that summary field transforms for fields having the same name
are consistent across summary classes

@author bratseth
config-model/src/main/java/com/yahoo/schema/processing/SummaryConsistency.java