code: @Override
      public String stripQuotes(String value) {
          if (null == value) {
              return null;
          }
          String modvalue = value.trim();
          if (0 == modvalue.length()) {
              return modvalue;
          }
          boolean needTrimming = false;
          int start = 0;
          if ('"' == modvalue.charAt(0) || '\'' == modvalue.charAt(0)) {
              start = 1;
              needTrimming = true;
          }
          int end = modvalue.length() - 1;
          if ('"' == modvalue.charAt(end) || '\'' == modvalue.charAt(end)) {
              needTrimming = true;
          } else {
              end++;
          }
          if (needTrimming) {
              return modvalue.substring(start, end);
          }
          return modvalue;
      }
docs: /*
  @see com.ibm.websphere.http.EncodingUtils#stripQuotes(java.lang.String)