BuilderSingularMapBuilder (Map<? extends String, ? extends String> myMap) { if (myMap == null) { throw new NullPointerException("myMap cannot be null"); } if (this.myMap$key == null) { this.myMap$key = new ArrayList<String>(); this.myMap$value = new ArrayList<String>(); } for (final Map.Entry<? extends String, ? extends String> $lombokEntry : myMap.entrySet()) { this.myMap$key.add($lombokEntry.getKey()); this.myMap$value.add($lombokEntry.getValue()); } return this; }