ExpressionTreeRewriter
protected virtual EXPR GenerateBuiltInUnaryOperator(PREDEFMETH pdm, EXPR pOriginalOperator, EXPR pOperator)
protected virtual EXPR GenerateUserDefinedConversion(EXPR arg, CType CType, EXPR target, MethWithInst method)
protected virtual EXPR GenerateUserDefinedConversion(EXPRUSERDEFINEDCONVERSION pExpr, EXPR pArgument)