PsiJavaFile:MethodRef4.java
  PsiMethodReferenceExpression:int[]::clone
    PsiTypeElement:int[]
      PsiTypeElement:int
        PsiKeyword:int('int')
      PsiJavaToken:LBRACKET('[')
      PsiJavaToken:RBRACKET(']')
    PsiJavaToken:DOUBLE_COLON('::')
    PsiReferenceParameterList
      <empty list>
    PsiIdentifier:clone('clone')