A.foo (3,,4)
-----
Groovy script
  Method call
    Reference expression
      Reference expression
        PsiElement(identifier)('A')
      PsiElement(.)('.')
      PsiElement(identifier)('foo')
    PsiWhiteSpace(' ')
    Arguments
      PsiElement(()('(')
      Literal
        PsiElement(Integer)('3')
      PsiElement(,)(',')
      PsiErrorElement:Expression expected
        <empty list>
      PsiElement(,)(',')
      Literal
        PsiElement(Integer)('4')
      PsiElement())(')')