anchor.diff:  This route matches if the request has a header named `X-Request-Id` whos value matches the `\d+` regular expression (has a value of one or more digits).
   
   === Host Route Predicate
  -The Host Route Predicate takes one parameters: the host name pattern. The pattern is an Ant style pattern with `.` as the separator. This predicates matches the `Host` header that matches the patter.
  +The Host Route Predicate takes one parameter: the host name pattern. The pattern is an Ant style pattern with `.` as the separator. This predicates matches the `Host` header that matches the pattern.
   
   .application.yml
   [source,yaml]
  
positive.code: 
  
  === Method Route Predicate
  TODO: document Method Route Predicate
  
  === Path Route Predicate
  TODO: document Path Route Predicate
  
negative.code: 
  == Route Predicates
  
  Spring Cloud Gateway matches routes as part of the Spring WebFlux `HandlerMapping` infrastructure. Spring Cloud Gateway includes many built-in Route Predicates. All of these predicates match on different attributes of the HTTP request. Multiple Route Predicates can be combined and are combined via logical `and`.
  
  === After Route Predicate
  TODO: document After Route Predicate
  