code: public static StringBuilder appendKeyDqValue(final StringBuilder sb, final String key, final Object value) {
          return sb.append(key).append(Chars.EQ).append(Chars.DQUOTE).append(value).append(Chars.DQUOTE);
      }
docs: Appends in the following format: key=double quoted value.
  
  @param sb a string builder
  @param key a key
  @param value a value
  @return the specified StringBuilder