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

    // Test for simplifyArray static method
    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]);
        assertEquals("b", result[1]);

    }

    /**
     * Simplifies the array.
     *
     * @param values The array.
     * @return The simplified array.
     */
    protected static String[] simplifyArray(final String[] values) {
        return stream(values).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    /**
     * Returns the parameter value array.
     *

                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