beginCompilationUnit(void)
  beginMetadataStar(void)
  endMetadataStar(0)
  beginTopLevelMember(void)
    beginTopLevelMethod(, null)
      handleVoidKeyword(void)
      handleIdentifier(test, topLevelFunctionDeclaration)
      handleNoTypeVariables(()
      beginFormalParameters((, MemberKind.TopLevelMethod)
        beginMetadataStar(C)
        endMetadataStar(0)
        beginFormalParameter(C, MemberKind.TopLevelMethod, null, null, null)
          handleIdentifier(C, typeReference)
          handleNoTypeArguments(x)
          handleType(C, null)
          handleIdentifier(x, formalParameterDeclaration)
          handleFormalParameterWithoutValue())
        endFormalParameter(null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
      endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
      handleAsyncModifier(null, null)
      beginBlockFunctionBody({)
        handleIdentifier(x, expression)
        handleNoTypeArguments(..)
        handleNoArguments(..)
        handleSend(x, ..)
        beginCascade(..)
          handleIdentifier(f, expressionContinuation)
          handleNoTypeArguments(()
          beginArguments(()
          endArguments(0, (, ))
          handleSend(f, !)
        endBinaryExpression(..)
        handleNonNullAssertExpression(!)
        handleIdentifier(g, expressionContinuation)
        handleNoTypeArguments(()
        beginArguments(()
        endArguments(0, (, ))
        handleSend(g, [)
      endBinaryExpression(.)
      beginLiteralString('Hi!')
      endLiteralString(0, ])
      handleIndexedExpression(null, [, ])
      handleNonNullAssertExpression(!)
    endCascade()
    beginCascade(..)
      handleIdentifier(h, expressionContinuation)
      handleNoTypeArguments(()
      beginArguments(()
      endArguments(0, (, ))
      handleSend(h, !)
    endBinaryExpression(..)
    handleNonNullAssertExpression(!)
    handleIdentifier(y, expressionContinuation)
    handleNoTypeArguments(=)
    handleNoArguments(=)
    handleSend(y, =)
  endBinaryExpression(.)
  handleLiteralInt(2)
  handleAssignmentExpression(=)
endCascade()
handleExpressionStatement(;)
endBlockFunctionBody(1, {, })
endTopLevelMethod(void, null, })
endTopLevelDeclaration()
endCompilationUnit(1, )