beginCompilationUnit(f)
  beginMetadataStar(f)
  endMetadataStar(0)
  beginTopLevelMember(f)
    beginTopLevelMethod(, null, null)
      handleNoType()
      handleIdentifier(f, topLevelFunctionDeclaration)
      handleNoTypeVariables(()
      beginFormalParameters((, MemberKind.TopLevelMethod)
        beginMetadataStar(x)
        endMetadataStar(0)
        beginFormalParameter(x, MemberKind.TopLevelMethod, null, null, null)
          handleNoType(()
          handleIdentifier(x, formalParameterDeclaration)
          handleFormalParameterWithoutValue(,)
        endFormalParameter(null, null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
        beginMetadataStar(y)
        endMetadataStar(0)
        beginFormalParameter(y, MemberKind.TopLevelMethod, null, null, null)
          handleNoType(,)
          handleIdentifier(y, formalParameterDeclaration)
          handleFormalParameterWithoutValue())
        endFormalParameter(null, null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
      endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
      handleAsyncModifier(null, null)
      beginBlockFunctionBody({)
        beginSwitchStatement(switch)
          handleIdentifier(x, expression)
          handleNoTypeArguments())
          handleNoArguments())
          handleSend(x, x)
          handleParenthesizedCondition((, null, null)
          beginSwitchBlock({)
            beginCaseExpression(case)
              beginPattern(case)
                handleNoType(_)
                handleWildcardPattern(null, _)
              endPattern(_)
              beginSwitchCaseWhenClause(when)
                handleIdentifier(y, expression)
                handleNoTypeArguments(+)
                handleNoArguments(+)
                handleSend(y, y)
                beginBinaryExpression(+)
                  handleNoTypeVariables(()
                  beginFunctionExpression(()
                    beginFormalParameters((, MemberKind.Local)
                    endFormalParameters(0, (, ), MemberKind.Local)
                    handleAsyncModifier(null, null)
                    handleLiteralInt(0)
                    handleExpressionFunctionBody(=>, null)
                  endFunctionExpression((, 0)
                endBinaryExpression(+, 0)
              endSwitchCaseWhenClause(0)
            endCaseExpression(case, when, :)
            beginSwitchCase(0, 1, case)
              handleBreakStatement(false, break, ;)
            endSwitchCase(0, 1, null, null, 1, case, ;)
          endSwitchBlock(1, {, })
        endSwitchStatement(switch, })
      endBlockFunctionBody(1, {, })
    endTopLevelMethod(f, null, })
  endTopLevelDeclaration(})
endCompilationUnit(1, )