switch (a){
case 1: break
default: 
}
-----
Groovy script
  Switch statement
    PsiElement(switch)('switch')
    PsiWhiteSpace(' ')
    PsiElement(()('(')
    Reference expression
      PsiElement(identifier)('a')
    PsiElement())(')')
    PsiElement({)('{')
    PsiWhiteSpace('\n')
    Case section
      Case label
        PsiElement(case)('case')
        PsiWhiteSpace(' ')
        Literal
          PsiElement(Integer)('1')
        PsiElement(:)(':')
      PsiWhiteSpace(' ')
      BREAK statement
        PsiElement(break)('break')
    PsiElement(new line)('\n')
    Case section
      Case label
        PsiElement(default)('default')
        PsiElement(:)(':')
      PsiErrorElement:Statement expected
        <empty list>
    PsiWhiteSpace(' ')
    PsiElement(new line)('\n')
    PsiElement(})('}')