Before:
  call ale#assert#SetUpLinterTest('php', 'psalm')

After:
  call ale#assert#TearDownLinterTest()

Execute(Custom executables should be used for the executable and command):
  let g:ale_php_psalm_executable = 'psalm_test'

  AssertLinter 'psalm_test',
  \ ale#Escape('psalm_test') . ' --diff --output-format=emacs %s'