@Override
	public IndexField copyField() { // null state not supported
		return new IndexField(indexedField.copyField(), primaryKey.copyField());
	}
Determine if the index field value has been truncated from its' original
value.
@return true if truncated else false
@deprecated this method serves no real purpose since the truncation 
status is not retained within the index table.
Ghidra/Framework/DB/src/main/java/db/IndexField.java