 internal==external.   In this case, toInternal should convert to
 the indexed representation, toExternal() should do nothing, and
 createField() should *not* call toInternal, but use the external
 value and set tokenized=true to get Lucene to convert to the
 internal(indexed) form.
 </p>

 :TODO: clean up and clarify this explanation.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../org/apache/solr/schema/FieldType.html#createField(org.apache.solr.schema.SchemaField,%20java.la