public interface StringInterner
A marker-interface for a String interner implementation.
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Method Summary 
Interns and returns a reference to the representative instance
for any collection of string instances that are equal to each other.
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Method Details 
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intern 
Interns and returns a reference to the representative instance
for any collection of string instances that are equal to each other.
- Parameters:
sample
- string instance to be interned
- Returns:
- reference to the interned string instance