beginCompilationUnit(f)
  beginMetadataStar(f)
  endMetadataStar(0)
  beginTopLevelMember(f)
    beginTopLevelMethod(, null)
      handleNoType()
      handleIdentifier(f, topLevelFunctionDeclaration)
      handleNoTypeVariables(()
      beginFormalParameters((, MemberKind.TopLevelMethod)
        beginMetadataStar(dynamic)
        endMetadataStar(0)
        beginFormalParameter(dynamic, MemberKind.TopLevelMethod, null, null, null)
          handleIdentifier(dynamic, typeReference)
          handleNoTypeArguments(a)
          handleType(dynamic, null)
          handleIdentifier(a, formalParameterDeclaration)
          handleFormalParameterWithoutValue())
        endFormalParameter(null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
      endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
      handleAsyncModifier(null, null)
      beginBlockFunctionBody({)
        handleIdentifier(a, expression)
        handleNoTypeArguments(?)
        handleNoArguments(?)
        handleSend(a, ?)
        handleLiteralInt(0)
        handleIndexedExpression(?, [, ])
        beginBinaryExpression(+)
        handleLiteralInt(1)
        endBinaryExpression(+)
        handleExpressionStatement(;)
      endBlockFunctionBody(1, {, })
    endTopLevelMethod(f, null, })
  endTopLevelDeclaration()
endCompilationUnit(1, )