docs: public HsqlName getSchemaHsqlName(String name) {
  
          if (name == null) {
              return defaultSchemaHsqlName;
          }
  
          if (SqlInvariants.INFORMATION_SCHEMA.equals(name)) {
              return SqlInvariants.INFORMATION_SCHEMA_HSQLNAME;
          }
  
          Schema schema = ((Schema) schemaMap.get(name));
  
          if (schema == null) {
              throw Error.error(ErrorCode.X_3F000, name);
          }
  
          return schema.name;
      }