public static int getTypeOid(final String columnTypeName) {
        Preconditions.checkArgument(COLUMN_TYPE_NAME_OID_MAP.containsKey(columnTypeName), "Cannot find PostgreSQL type oid for columnTypeName '%s'", columnTypeName);
        return COLUMN_TYPE_NAME_OID_MAP.get(columnTypeName);
    }
@Test
    void assertGetTypeOidSuccess() {
        assertThat(PostgreSQLArrayColumnType.getTypeOid("_int4"), is(1007));
    }