beginCompilationUnit(class)
  beginMetadataStar(class)
  endMetadataStar(0)
  beginClassOrMixinOrNamedMixinApplicationPrelude(class)
    handleIdentifier(A, classOrMixinDeclaration)
    beginTypeVariables(<)
      beginMetadataStar(T)
      endMetadataStar(0)
      handleIdentifier(T, typeVariableDeclaration)
      beginTypeVariable(T)
        handleTypeVariablesDefined(T, 1)
        handleNoType(T)
      endTypeVariable(>, 0, null, null)
    endTypeVariables(<, >)
    beginClassDeclaration(class, null, null, null, A)
      handleNoType(>)
      handleClassExtends(null, 1)
      handleClassNoWithClause()
      handleImplements(null, 0)
      handleClassHeader(class, class, null)
      beginClassOrMixinOrExtensionBody(DeclarationKind.Class, {)
      endClassOrMixinOrExtensionBody(DeclarationKind.Class, 0, {, })
    endClassDeclaration(class, })
  endTopLevelDeclaration(class)
  beginMetadataStar(class)
  endMetadataStar(0)
  beginClassOrMixinOrNamedMixinApplicationPrelude(class)
    handleIdentifier(B, classOrMixinDeclaration)
    handleNoTypeVariables(implements)
    beginClassDeclaration(class, null, null, null, B)
      handleNoType(B)
      handleClassExtends(null, 1)
      handleClassNoWithClause()
      handleIdentifier(A, typeReference)
      beginTypeArguments(<)
        handleIdentifier(num, typeReference)
        handleNoTypeArguments(?)
        handleType(num, ?)
      endTypeArguments(1, <, >)
      handleType(A, null)
      handleImplements(implements, 1)
      handleClassHeader(class, class, null)
      beginClassOrMixinOrExtensionBody(DeclarationKind.Class, {)
      endClassOrMixinOrExtensionBody(DeclarationKind.Class, 0, {, })
    endClassDeclaration(class, })
  endTopLevelDeclaration()
endCompilationUnit(2, )