code: func NewIndentWriter(indentLevel uint, indentString string,
  	writer io.Writer) *indentWriter {
  	return &indentWriter{
  		writer:      writer,
  		indentLevel: indentLevel,
  		indentBytes: []byte(indentString),
  		indent:      true,
  	}
  }
docs: // indentWriter indents all lines written to it with a specified indent string
  // indented the specified number of indents