//@moduleElements.0/@body/@statements.0/@condition/@aql/@arguments.0/@arguments.0/@arguments.0
Add parameter notExisting
Replace file:/home/development/git/acceleo/tests/org.eclipse.acceleo.aql.tests/resources/language/ifStatement/invalidCondition/invalidCondition.mtl [122, 2, 53, 122, 2, 53] , notExisting: String
Surround with Let: notExisting
Replace file:/home/development/git/acceleo/tests/org.eclipse.acceleo.aql.tests/resources/language/ifStatement/invalidCondition/invalidCondition.mtl [127, 3, 2, 200, 5, 7] [let notExisting : String = '']
    [if (notExisting.eClassifiers->size() = 0)]
      some static text.
    [/if]
  [/let]