https://guava.dev/releases/snapshot-jre/api/docs/com/google/common/collect/ImmutableSortedMap.Builder.html
ImmutableSortedMap.Builder (Guava: Google Core Libraries for Java 999.0.0-HEAD-jre-SNAPSHOT API)
declaration: package: com.google.common.collect, class: ImmutableSortedMap, class: Builder