docs: @Override
      protected CheckSchemaOperation createCheckSchemaOperation() {
          if (DEFAULT_TABLESPACE_CLAUSE.equals(indexTablespace) && !DEFAULT_TABLESPACE_CLAUSE.equals(tablespace)) {
              // tablespace was set but not indexTablespace : use the same for both
              indexTablespace = tablespace;
          }
          return super.createCheckSchemaOperation()
              .addVariableReplacement(TABLESPACE_VARIABLE, tablespace)
              .addVariableReplacement(INDEX_TABLESPACE_VARIABLE, indexTablespace);
      }