@Override
    public DatatypeStreamingValidator createStreamingValidator(
            ValidationContext context) {
        return new DatatypeStreamingValidatorImpl(this);
    }
Merely returns a <code>DatatypeStreamingValidatorImpl</code>.
@param context the validation context (ignored by subclasses)
@return An unoptimized <code>DatatypeStreamingValidator</code>
@see org.relaxng.datatype.Datatype#createStreamingValidator(org.relaxng.datatype.ValidationContext)
src/nu/validator/datatype/AbstractDatatype.java