@Override
    public Optional<DatabaseAdminExecutor> create(final SQLStatementContext sqlStatementContext) {
        SQLStatement sqlStatement = sqlStatementContext.getSqlStatement();
        if (sqlStatement instanceof ShowStatement) {
            return Optional.of(new PostgreSQLShowVariableExecutor((ShowStatement) sqlStatement));
        }
        return Optional.empty();
    }
@Test
    void assertCreateWithOtherSQLStatementContextOnly() {
        assertThat(new PostgreSQLAdminExecutorCreator().create(new UnknownSQLStatementContext(new PostgreSQLInsertStatement())), is(Optional.empty()));
    }