@Deprecated
    @Restricted(DoNotUse.class)
    public static String resolve(ConfigurationContext context, String toInterpolate) {
        return context.getSecretSourceResolver().resolve(toInterpolate);
    }
@Test
    public void resolve_SystemProperty() throws Exception {
        String input = "java.version";
        String expected = System.getProperty(input);
        String output = resolve("${sysProp:" + input + "}");
        assertThat(output, equalTo(SYSPROP.lookup(input)));
        assertThat(output, equalTo(expected));
    }