code: public void setScriptLocation(String scriptLocation) {
          if (scriptLocation == null || scriptLocation.isEmpty()) {
              throw new IllegalArgumentException("Script location cannot be unset.");
          }
          this.scriptLocation = scriptLocation;
      }
docs: The location where the scripts reside on the classpath.
  The default is <code>MigrationRepository.DEFAULT_SCRIPT_PATH</code> which
  points to <code>cassandra/migration</code> on the classpath.
  
  @param scriptLocation the location of the migration scripts. Must not be null.
  @throws IllegalArgumentException when scriptLocation is null or empty