private byte[] encode0(
      DexFile file, String prefix, PrintWriter debugPrint, AnnotatedOutput out, boolean consume) {
    PositionList positions = code.getPositions();
    LocalList locals = code.getLocals();
    DalvInsnList insns = code.getInsns();
    int codeSize = insns.codeSize();
    int regSize = insns.getRegistersSize();

    DebugInfoEncoder encoder =
        new DebugInfoEncoder(positions, locals, file, codeSize, regSize, isStatic, ref);

    byte[] result;

    if ((debugPrint == null) && (out == null)) {
      result = encoder.convert();
    } else {
      result = encoder.convertAndAnnotate(prefix, debugPrint, out, consume);
    }

    return result;
  }
Helper for {@link #encode} to do most of the work.

@param file {@code null-ok;} file to refer to during encoding
@param prefix {@code null-ok;} prefix to attach to each line of output
@param debugPrint {@code null-ok;} if specified, an alternate output for annotations
@param out {@code null-ok;} if specified, where annotations should go
@param consume whether to claim to have consumed output for {@code out}
@return {@code non-null;} the encoded array
android/android_framework/dex-maker/src/main/java/com/android/dx/dex/file/DebugInfoItem.java