code: @Override
      protected BasicHttpProcessor createHttpProcessor() {
          final BasicHttpProcessor parentHttpProcessor = super.createHttpProcessor();
          
          for (int i = 0; i < parentHttpProcessor.getRequestInterceptorCount(); i++) {
              final HttpRequestInterceptor requestInterceptor = parentHttpProcessor.getRequestInterceptor(i);
              
              //Replace the existing RequestContent interceptor with a version that sets overwrite=true
              if (requestInterceptor instanceof RequestContent) {
                  parentHttpProcessor.removeRequestInterceptorByClass(RequestContent.class);
                  parentHttpProcessor.addInterceptor(new RequestContent(true), i);
                  break;
              }
          }
          
          return parentHttpProcessor;
      }
docs: Override just to set RequestContent(true)