docs: void dropIndex(String indexName) {
  
          Index index;
  
          index = table.getIndex(indexName);
  
          if (table.isIndexingMutable()) {
              table.dropIndex(session, indexName);
          } else {
              OrderedHashSet indexSet = new OrderedHashSet();
  
              indexSet.add(table.getIndex(indexName).getName());
  
              Table tn = table.moveDefinition(session, table.tableType, null,
                                              null, null, -1, 0, emptySet,
                                              indexSet);
  
              tn.moveData(session, table, -1, 0);
              updateConstraints(tn, emptySet);
              setNewTableInSchema(tn);
              database.persistentStoreCollection.releaseStore(table);
  
              table = tn;
          }
  
          if (!index.isConstraint()) {
              database.schemaManager.removeSchemaObject(index.getName());
          }
  
          database.schemaManager.recompileDependentObjects(table);
      }