Add AddEndpointsApiExplorer to DefaultSetup

[bennetrr]

Add builder.Services.AddEndpointsApiExplorer() to builder.Services.AddDefaultSetup().

[robinmanuelthiel]

Can you describe a bit more why this is needed and for what?

[bennetrr]

This is related to the issue where I couldn't see the asp.net identity endpoints in swagger.
The solution was to add the code above to my Program.cs, although I invoked AddDefaultSetup() with OpenAPI enabled in the options.

[robinmanuelthiel]

Can you pls a full code sample here? According to my research, AddEndpointsApiExplorer is only relevant for minimal APIs in .NET