@Override
        protected Map<String, String> initialValue() {
          return Collections.emptyMap();
        }
The GetEnvironmentHandlerInterceptor class handles extracting Gfsh environment variables encoded
in the HTTP request message as request parameters.
<p>

@see javax.servlet.http.HttpServletRequest
@see javax.servlet.http.HttpServletResponse
@see org.springframework.web.servlet.AsyncHandlerInterceptor
@since GemFire 8.0
geode-web/src/main/java/org/apache/geode/management/internal/web/controllers/support/LoginHandlerInterceptor.java