anchor.diff:    public struct function getRecipientUploadStatus() {
       return apiCall( 'GET', "/contactdb/status" );
     }
  -
  -  /**
  -  * https://sendgrid.api-docs.io/v3.0/contacts-api-recipients/update-recipient
  -  * @hint This endpoint allows you to update one or more recipients. Note that it will also add non-existing records.
  -  * @recipients an array of objects, with at minimum, and 'email' key/value
  -  */
  -  public struct function updateRecipients( required array recipients ) {
  -    return apiCall( 'PATCH', '/contactdb/recipients', {}, recipients );
  -  }
  -
   
     /**
     * Contacts API - Custom Fields
  
positive.code: 
    /**
    * https://sendgrid.api-docs.io/v3.0/contacts-api-recipients/add-recipients
    * @hint This endpoint allows you to add Marketing Campaigns recipients. Note that it also appears to update existing records, so it basically functions like a PATCH
    * @recipients an array of objects, with at minimum, and 'email' key/value
    */
    public struct function addRecipients( required array recipients ) {
      return apiCall( 'POST', '/contactdb/recipients', {}, recipients );
    }
  
    /**
    * @hint convenience method for adding a single recipient at a time. Delegates to addRecipients()
    * @recipient Facilitates two means of adding a recipient. You can pass in a struct with key/value pairs providing all relevant recipient information. Alternatively, you can use this to simply pass in the recipient's email address, which is all that is required.
    * @customFields keys correspond to the custom field names, along with their assigned values
    */
    public struct function addRecipient( required any recipient, string first_name = '', string last_name = '', struct customFields = {} ) {
      var recipients = [];
      var contact = {};
  
  
negative.code: 
      recipients.append( contact );
  
      return upsertRecipients( method, recipients );
    }
  
    /**
    * @hint shared private method for inserting/updating recipients
    */
    private struct function upsertRecipients( required string method, required array recipients ) {
      return apiCall( method, '/contactdb/recipients', {}, recipients );
    }
  
    /**
  