beginCompilationUnit(main)
  beginMetadataStar(main)
  endMetadataStar(0)
  beginTopLevelMember(main)
    beginTopLevelMethod(, null, null)
      handleNoType()
      handleIdentifier(main, topLevelFunctionDeclaration)
      handleNoTypeVariables(()
      beginFormalParameters((, MemberKind.TopLevelMethod)
      endFormalParameters(0, (, ), MemberKind.TopLevelMethod)
      handleAsyncModifier(null, null)
      beginBlockFunctionBody({)
        handleIdentifier(foo, expression)
        handleNoTypeArguments(=)
        handleNoArguments(=)
        handleSend(foo, foo)
        handleLiteralInt(42)
        handleAssignmentExpression(=, 42)
        handleExpressionStatement(foo, ;)
      endBlockFunctionBody(1, {, })
    endTopLevelMethod(main, null, })
  endTopLevelDeclaration(})
endCompilationUnit(1, )