ISymbol.ToDisplayString() bug

[Phylum123]

Steps To Reproduce:

1. Use the display format shown below:

var methodDisplayFormat = new SymbolDisplayFormat( typeQualificationStyle: SymbolDisplayTypeQualificationStyle.NameAndContainingTypesAndNamespaces, genericsOptions: SymbolDisplayGenericsOptions.None, memberOptions: SymbolDisplayMemberOptions.IncludeParameters, parameterOptions: SymbolDisplayParameterOptions.IncludeModifiers | SymbolDisplayParameterOptions.IncludeType | SymbolDisplayParameterOptions.IncludeName, propertyStyle: SymbolDisplayPropertyStyle.ShowReadWriteDescriptor, localOptions: SymbolDisplayLocalOptions.IncludeType, kindOptions: SymbolDisplayKindOptions.IncludeMemberKeyword, delegateStyle: SymbolDisplayDelegateStyle.NameAndSignature, extensionMethodStyle: SymbolDisplayExtensionMethodStyle.StaticMethod, miscellaneousOptions: SymbolDisplayMiscellaneousOptions.UseSpecialTypes);

2. Take a method symbol with a "ref" or "out" parameter and use ToDisplayString(methodDisplayFormat) and look at the resulting string

This will display everything correctly, however, if you remove 'SymbolDisplayParameterOptions.IncludeType' from parameterOptions, then the modifiers ("out", "ref", etc.) will no longer display.

Expected Results:

For the modifiers to display, regardless if type is displayed or not.