public static _Private_IonTextAppender forAppendable(Appendable out,
                                                         Charset charset)
    {
        _Private_FastAppendable fast = new AppendableFastAppendable(out);
        return forFastAppendable(fast, charset);
    }
public static _Private_IonTextAppender forAppendable ( Appendable out , Charset charset ) { _Private_FastAppendable fast = new AppendableFastAppendable ( out ) ; return forFastAppendable ( fast , charset ) ; }
@param charset must be either {@link IonTextWriterBuilder#ASCII} or
{@link IonTextWriterBuilder#UTF8}. When ASCII is used, all non-ASCII
characters will be escaped. Otherwise, only select code points will be
escaped.