/** @return The display string of all parameters. (NotNull) */
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append(DfTypeUtil.toClassTitle(this)).append(":");
sb.append(xbuildColumnString());
return sb.toString();
}
private String xbuildColumnString() {
final String c = ", ";
final StringBuilder sb = new StringBuilder();
sb.append(c).append(_vInVarchar);
sb.append(c).append(_vOutVarchar);
if (sb.length() > 0) {
sb.delete(0, c.length());
}
sb.insert(0, "{").append("}");
return sb.toString();
}