protected void appendSummarySize(StringBuffer buffer, String fieldName, int size) {
        buffer.append(sizeStartText);
        buffer.append(size);
        buffer.append(sizeEndText);
    }
<p>Append to the <code>toString</code> a size summary.</p>

<p>The size summary is used to summarize the contents of
<code>Collections</code>, <code>Maps</code> and arrays.</p>

<p>The output consists of a prefix, the passed in size
and a suffix.</p>

<p>The default format is <code>'&lt;size=n&gt;'<code>.</p>

@param buffer  the <code>StringBuffer</code> to populate
@param fieldName  the field name, typically not used as already appended
@param size  the size to append
android/android_framework/base/src/main/java/lang3/builder/ToStringStyle.java