@Override
    public int hashCode() {
        return Arrays.hashCode(new Object[] { open,
                assignee != null ? assignee.id() : null,
                milestone != null ? milestone.number() : null,
                assignee != null ? assignee.id() : null,
                repository != null ? repository.id() : null,
                labels, direction, sortType });
    }
Get display {@link CharSequence} representing this filter

@return display
app/src/main/java/com/github/pockethub/android/core/issue/IssueFilter.java