code: public String charsToString() {
          return collect(StringBuilder::new, (sb, c) -> sb.append((char) c), StringBuilder::append).toString();
      }
docs: Returns a {@link String} consisting of chars from this stream.
  
  <p>
  This is a terminal operation.
  
  <p>
  During string creation stream elements are converted to chars using
  {@code (char)} cast operation.
  
  @return a new {@code String}
  @since 0.2.1