assertFalse(searchRequestParams.isEmptyArray(new String[] { "", "value", "  " }));
    }

    // Test for simplifyArray static method
    @Test
    public void test_simplifyArray_withDuplicates() {
        String[] input = { "a", "b", "a", "c", "b" };
        String[] result = SearchRequestParams.simplifyArray(input);
        assertEquals(3, result.length);
        assertEquals("a", result[0]);

                final String key = entry.getKey();
                if (key.startsWith("fields.")) {
                    final String[] value = simplifyArray(entry.getValue());
                    fields.put(key.substring("fields.".length()), value);
                }
            }
            return fields;
        }

        @Override