throws IOException {
    checkNotNull(lineSeparator);

    try (Writer out = openBufferedStream()) {
      while (lines.hasNext()) {
        out.append(lines.next()).append(lineSeparator);
      }
    }
  }

  /**
   * Writes all the text from the given {@link Readable} (such as a {@link Reader}) to this sink.

            buf.append(e.getKey()).append(": ");
            try {
                buf.append(e.getValue().get());
            } catch (final Exception ex) {
                logger.warn("Failed to process {} task.", e.getKey(), ex);
                buf.append(ex.getMessage());
            }
            buf.append('\n');
        });
        return buf.toString();
    }

            buffer.append("[");
            for (Item item : this) {
                if (buffer.length() > 1) {
                    buffer.append(", ");
                }
                if (item instanceof ListItem) {
                    buffer.append(((ListItem) item).toListString());
                } else {
                    buffer.append(item);
                }
            }

                            map.put(ExtractData.RESOURCE_NAME_KEY, filename);
                            buf.append(extractor.getText(new IgnoreCloseInputStream(is), map).getContent());
                            buf.append('\n');
                        } catch (final Exception e) {
                            if (logger.isDebugEnabled()) {

    }

    // For pre-sizing a builder, just get the right order of magnitude
    StringBuilder builder = new StringBuilder(array.length * 7);
    builder.append(array[0]);
    for (int i = 1; i < array.length; i++) {
      builder.append(separator).append(array[i]);
    }
    return builder.toString();
  }

  /**
   * Returns a comparator that compares two {@code boolean} arrays <a

    }

    // For pre-sizing a builder, just get the right order of magnitude
    StringBuilder builder = new StringBuilder(array.length * 7);
    builder.append(array[0]);
    for (int i = 1; i < array.length; i++) {
      builder.append(separator).append(array[i]);
    }
    return builder.toString();
  }

  /**
   * Returns a comparator that compares two {@code boolean} arrays <a

}

func validateFlags() error {
	var err error
	if inFilename == "" {
		err = multierror.Append(err, errors.New("filename not specified (see --filename or -f)"))
	}
	if meshConfigFile == "" && meshConfigMapName == "" && iopFilename == "" {
		err = multierror.Append(err,
			errors.New("--meshConfigFile or --meshConfigMapName or --operatorFileName must be set"))
	}
	return err
}

            char ch = s.charAt(pos);
            pos++;
            if (ch == '\\') {
                sb.append(ch);
                if (pos >= end) {
                    break; // ERROR, or let it go?
                }
                ch = s.charAt(pos);
                pos++;
            }

            sb.append(ch);
        }

        if (sb.length() > 0) {
            list.add(sb.toString());
        }

            # new_section = Section(title=new_title, children=new_children)
            item.title = new_title
            item.children = new_children
            new_items.append(item)
        else:
            new_items.append(item)
    return new_items


def on_nav(
    nav: Navigation, *, config: MkDocsConfig, files: Files, **kwargs: Any
) -> Navigation:

				if idx.Where == "" {
					idx.Where = index.Where
				}
				if idx.Comment == "" {
					idx.Comment = index.Comment
				}
				if idx.Option == "" {
					idx.Option = index.Option
				}

				idx.Fields = append(idx.Fields, index.Fields...)
				sort.Slice(idx.Fields, func(i, j int) bool {
					return idx.Fields[i].priority < idx.Fields[j].priority
				})

				indexes[index.Name] = idx
			}
		}
	}