code: public int deleteByExtension(String extensionName) throws SQLException {
  
  		DeleteBuilder<Extensions, Void> db = deleteBuilder();
  		db.where().eq(Extensions.COLUMN_EXTENSION_NAME, extensionName);
  
  		int deleted = db.delete();
  
  		return deleted;
  	}
docs: Delete by extension name
  
  @param extensionName
  extension name
  @return deleted count
  @throws SQLException
  upon failure