azaptree-http-service/src/main/java/com/azaptree/services/http/handler/AsyncHttpHandlerSupport.java
protected Map<String, Object> preProcess(final String target, final Request baseRequest, final HttpServletRequest request,
	        final HttpServletResponse response) throws IOException, ServletException {
		return Collections.emptyMap();
	}
protected Map<String, Object> preProcess(final String target, final Request baseRequest, final HttpServletRequest request,
	        final HttpServletResponse response) throws IOException, ServletException {
		return Collections.emptyMap();
	}
protected Map < String , Object > preProcess ( final String target , final Request baseRequest , final HttpServletRequest request , final HttpServletResponse response ) throws IOException , ServletException { return Collections . emptyMap ( ) ; }
Validate the request and extract any data from the HTTP request that will be required to process the request asynchronously.

If the request is invalid, then handle the request appropriately.

*** NOTE: to indicate that this method handled the request, set Request.handled to true: <code>baseRequest.setHandled(true);</code>

@param target
@param baseRequest
@param request
@param response
@return
Validate the request and extract any data from the HTTP request that will be required to process the request asynchronously .