ColumnReference not quoted

[jakobbraun]

@Test
    void testQuotedIdentifiers() {
        final StringRendererConfig config = StringRendererConfig.builder().quoteIdentifiers(true).build();
        assertThat(this.select.where(eq(ExpressionTerm.stringLiteral("foo"), ColumnReference.of("test"))),
                rendersWithConfigTo(config, "SELECT * FROM \"person\" WHERE 'foo' = \"test\""));
    }

Expected: SELECT * FROM "person" WHERE 'foo' = "test"
     but: SELECT * FROM "person" WHERE 'foo' = test