public IndexRequest textVersion(final Integer textVersion) {
        if (textVersion != null) {
            isTrueArgument("textVersion must be 1, 2 or 3", VALID_TEXT_INDEX_VERSIONS.contains(textVersion));
        }
        this.textVersion = textVersion;
        return this;
    }
public IndexRequest textVersion(final Integer textVersion) {
        if (textVersion != null) {
            isTrueArgument("textVersion must be 1, 2 or 3", VALID_TEXT_INDEX_VERSIONS.contains(textVersion));
        }
        this.textVersion = textVersion;
        return this;
    }
public IndexRequest textVersion ( final Integer textVersion ) { if ( textVersion != null ) { isTrueArgument ( "textVersion must be 1, 2 or 3" , VALID_TEXT_INDEX_VERSIONS . contains ( textVersion ) ) ; } this . textVersion = textVersion ; return this ; }
Set the text index version number.

@param textVersion the text index version number.
@return this
Set the text index version number .