(Program
  (Package
    (Identifier))
{+(QualifiedImport
  {+(Identifier)+})+}
{+(Import
  {+(TextElement)+})+}
{+(QualifiedImport
  {+(Identifier)+})+}
{-(QualifiedImport
  {-(Identifier)-})-}
{-(Import
  {-(TextElement)-})-}
{-(QualifiedImport
  {-(Identifier)-})-}
  (Function
    (Empty)
    (Identifier)
    ([])
    ([])))