code: public java.util.Map<String, String> getAttributes() {
          if (attributes == null) {
              attributes = new com.amazonaws.internal.SdkInternalMap<String, String>();
          }
          return attributes;
      }
docs: <p>
  For a list of attributes, see <a
  href="https://docs.aws.amazon.com/sns/latest/api/API_SetEndpointAttributes.html">SetEndpointAttributes</a>.
  </p>
  
  @return For a list of attributes, see <a
  href="https://docs.aws.amazon.com/sns/latest/api/API_SetEndpointAttributes.html"
  >SetEndpointAttributes</a>.