### Question:
PostgreSQLOptions implements VendorOptions { @Override public String escapeIdentifier(String id) { return "\"" + id + "\""; }  @Override String escapeIdentifier(String id);  }### Answer:
@Test void testStandard() { VendorOptions postgreSQLOptions = new PostgreSQLOptions(); assertThat(postgreSQLOptions.escapeIdentifier("table")).isEqualTo("\"table\""); }
@Test void testSpace() { VendorOptions postgreSQLOptions = new PostgreSQLOptions(); assertThat(postgreSQLOptions.escapeIdentifier("table space")).isEqualTo("\"table space\""); }
@Test void testNumber() { VendorOptions postgreSQLOptions = new PostgreSQLOptions(); assertThat(postgreSQLOptions.escapeIdentifier("table2table")).isEqualTo("\"table2table\""); }