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Reports String concatenation used as
the argument to <b>StringBuffer.append()</b>,
<b>StringBuilder.append()</b> or
<b>Appendable.append()</b>. Such calls
may profitably be turned into chained append calls on the existing
<b>StringBuffer/Builder/Appendable</b>, saving the
cost of an extra <b>StringBuffer/Builder</b>
allocation.
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This inspection ignores compile time evaluated String
concatenations, which when converted to chained append calls would only
worsen performance.
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