terface in java.lang">String</a>&nbsp;getMainValuePrefix(<a href="../../../../org/apache/solr/schema/FieldType.html" title="class in org.apache.solr.schema">FieldType</a>&nbsp;ft)</pre>
<div class="block">expert internal use, subject to change.
 Returns null if no prefix or prefix not needed, or the prefix of the main value of a trie field
 that indexes multiple precisions per value.</div>
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