public void append(StringBuffer buffer, String fieldName, long[] array, Boolean fullDetail) {
        appendFieldStart(buffer, fieldName);

        if (array == null) {
            appendNullText(buffer, fieldName);

        } else if (isFullDetail(fullDetail)) {
            appendDetail(buffer, fieldName, array);

        } else {
            appendSummary(buffer, fieldName, array);
        }

        appendFieldEnd(buffer, fieldName);
    }
<p>Append to the <code>toString</code> a <code>long</code>
array.</p>

@param buffer  the <code>StringBuffer</code> to populate
@param fieldName  the field name
@param array  the array to add to the <code>toString</code>
@param fullDetail  <code>true</code> for detail, <code>false</code>
 for summary info, <code>null</code> for style decides
android/android_framework/base/src/main/java/lang3/builder/ToStringStyle.java