code: public com.squareup.okhttp.Call getAlliancesAllianceIdContactsAsync(Integer allianceId, String datasource,
              String ifNoneMatch, Integer page, String token, final ApiCallback<List<AllianceContactsResponse>> callback)
              throws ApiException {
  
          com.squareup.okhttp.Call call = getAlliancesAllianceIdContactsValidateBeforeCall(allianceId, datasource,
                  ifNoneMatch, page, token, callback);
          Type localVarReturnType = new TypeToken<List<AllianceContactsResponse>>() {
          }.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }
docs: Get alliance contacts (asynchronously) Return contacts of an alliance ---
  This route is cached for up to 300 seconds SSO Scope:
  esi-alliances.read_contacts.v1
  
  @param allianceId
  An EVE alliance ID (required)
  @param datasource
  The server name you would like data from (optional, default to
  tranquility)
  @param ifNoneMatch
  ETag from a previous request. A 304 will be returned if this
  matches the current ETag (optional)
  @param page
  Which page of results to return (optional, default to 1)
  @param token
  Access token to use if unable to set a header (optional)
  @param callback
  The callback to be executed when the API call finishes
  @return The request call
  @throws ApiException
  If fail to process the API call, e.g. serializing the request
  body object