als:
  sanitization:
    pathFilters:
    - keyMatch: "list" # Regex to remove path segment "list"
    argsFilters:
      remove:
        - keyMatch: "id" # Regex to remove query parameter "id" 
      sanitize:
        - keyMatch: "city"  # Regex to sanitize first three characters od query param "city"
          valueMatch: "^.{0,3}"
    requestHeaderFilters:
      remove:
        - keyMatch: "^x-amplify.*" # Regex to remove all x-amplify headers in Reqheaders
      sanitize:
        - keyMatch: "x-axway"
          valueMatch: "^.{0,3}" # Regex to sanitize first three characters of all x-axway headers in Reqheaders
    responseHeaderFilters:
      remove:
        - keyMatch: "x-envoy.*" # Regex to remove all x-envoy headers in Resheaders
      sanitize:
        - keyMatch: "ip"  # Regex to sanitize ip in ResHeaders as per Regex specified in Valuematch 
          valueMatch: ".{0,3}$"