OptionalextensionPath relative to the extension directory. Should start with '/'.
OptionalregexSubstitution pattern for rules which specify a 'regexFilter'. The first match of regexFilter within the url will be replaced with this pattern. Within regexSubstitution, backslash-escaped digits (\1 to \9) can be used to insert the corresponding capture groups. \0 refers to the entire matching text.
OptionaltransformUrl transformations to perform.
OptionalurlThe redirect url. Redirects to JavaScript urls are not allowed.
Describes how the redirect should be performed. Only valid when type is 'redirect'.