public void addDocumentSummary(ParsedDocumentSummary docsum) {
        String dsName = docsum.name();
        verifyThat(! docSums.containsKey(dsName), "already has document-summary", dsName);
        docSums.put(dsName, docsum);
    }
This class holds the extracted information after parsing
one schema (.sd) file, using simple data structures
as far as possible.

Do not put complicated logic here!

@author arnej27959
config-model/src/main/java/com/yahoo/schema/parser/ParsedSchema.java