Allows customization of a request beyond its initial recorded state
Think of aliases as template variables within a request which are resolved before a request is replayed. For example, let's say we use the following option:
--assign ":userId=1"
and we are about to replay:
GET /users/1
and we have defined the endpoint as such (where :userId is an alias):
GET /users/:userId
Then the replayed request will actually be:
GET /users/1
This concept works for query params, headers and body params (for requests that have a parseable body).