code: public String describeAllowedMimeTypes() {
          if (bindingMIMETypes == null || bindingMIMETypes.length == 0) {
              return ANY_MIME_TYPE;
          }
          StringBuffer out = new StringBuffer();
          for (int i = 0; i < bindingMIMETypes.length; i++) {
              String allowed = bindingMIMETypes[i];
              if (allowed == null) {
                  return ANY_MIME_TYPE;
              }
              if (allowed.equals("*/*")) {
                  return ANY_MIME_TYPE;
              }
              if (allowed.equals("*")) {
                  return ANY_MIME_TYPE;
              }
              if (i > 0) {
                  if (i < bindingMIMETypes.length - 1) {
                      out.append(", ");
                  } else {
                      if (i > 1) {
                          out.append(",");
                      }
                      out.append(" or ");
                  }
              }
              out.append(allowed);
          }
          return out.toString();
      }
docs: In human readable string, describe which mime types are allowed.