for (;;){}
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Groovy script
  For statement
    PsiElement(for)('for')
    PsiWhiteSpace(' ')
    PsiElement(()('(')
    Traditional FOR clause
      PsiElement(;)(';')
      PsiElement(;)(';')
    PsiElement())(')')
    Block statement
      Open block
        PsiElement({)('{')
        PsiElement(})('}')