This question runs in a pre-configured Salesforce environment - no personal connection required.

Write a method that uses SOQL to find all Account records that do not have a Fax number. The method should return a List of Account records where the Fax field is either null or empty.

Examples:

Input: Database contains accounts with and without fax numbers Output: List<Account> containing only accounts where Fax is null or empty Explanation: Returns accounts that have no fax number specified Example Accounts: - TechFlow Solutions (Fax: null) - INCLUDED - Global Manufacturing (Fax: '') - INCLUDED - Cloud Code Academy (Fax: '+1-555-0199') - EXCLUDED
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