title: Initialize list variable as empty within Robot Framework ***Variables*** section
body: <p>I would like to define a list variable which is empty initially:</p>
  <pre><code>*** Settings ***
  Library  Collections
  
  *** Variables ***
  @{customers}=  []    # how to do this the right way? I expect an empty list.
      
  *** Test Cases ***
  Create Customers
      Add New Customer
      Add New Customer
      Log to console  ${customers}
      # results in:  ['[]', {'name': 'Ben', 'id': '123'}, {'name': 'Ben', 'id': '123'}]     
  
  *** Keywords ***
  Add New Customer
      ${customer}=  Create Dictionary  name=Ben  id=123
      Append To List  ${customers}  ${customer}
  </code></pre>
  <p>Regardless I know I could initialize @{customers} within testcase with 'Create List' I'm confused why the list has '[]' as first element. How I could initialize a list as empty in Variables section?</p>