code: public void onCreateDatabase(SQLiteDatabase database) {
  		for (ContractHolder contract : contracts) {
  			openHelper.createTable(database, contract);
  		}
  	}
docs: Called when the database is created for the first time. </br>
  The {@link ProviGenProvider} automatically creates database tables and the needed columns
  if {@code super.onCreateDatabase(database)} is called.</br>
  The initial population of the tables should happen here.
  @param database The database.