Ordering of parameters in generated method calls are alphabetically sorted unexpectedly

[drahnr]

Working with another OpenAPI spec, utilizing arguments like startTime and endTime, the ordering of arguments is arbitrary in the generated calls. That's rather unfortunate.

I.e.

      parameters:
        - $ref: '#/components/parameters/asset'
        - $ref: '#/components/parameters/sym'
        - name: uId
          in: query
          description: the tranId in  `POST /foo/v1/bar`
          schema:
            type: integer
            format: int64
            example: 123456789
        - $ref: '#/components/parameters/startTime'
        - $ref: '#/components/parameters/endTime'
        - $ref: '#/components/parameters/current'
        - $ref: '#/components/parameters/size'
        - $ref: '#/components/parameters/archived'
        - $ref: '#/components/parameters/recvWindow'

becomes alphabetically sorted:

    pub async fn placeholder<'a>(
       &'a self,
       archived: Option<&'a str>,
       asset: &'a str,
       current: Option<i32>,
       end_time: Option<i64>, // <<<<<<<<
       isolated_symbol: Option<&'a str>,
       recv_window: Option<i64>,
       signature: &'a str,
       size: Option<i32>,
       start_time: Option<i64>,  // <<<<<<<< 
       timestamp: i64, 
       tx_id: Option<i64>,

which is counter intuitive and presume caused by https://github.com/drahnr/progenitor/blob/d9da8af7407b14f153e973eaf2e2acfda83bd0cb/progenitor-impl/src/method.rs#L2411

Exptectation:

Retain ordering of the OpenAPI spec