This idea of this repo is to show how to develop a library that should :

• Allow to use it own IOptions
• Read it from wellknown SectionName
• Use the already computed IConfiguration that a Consumer does on it own (here it use both appsettings.json and appsettings.Development.json)
• Allow to override it in the Consumer startup
• The lib should have the final word with a PostConfigure for field validation. For example is a value must be positve it could default it again if the supplied value is negative

The result in this scenario is :

{
    "Value": {
        "V": "V default value",
        "W": "Value w from appsettings.json",
        "X": "Value x from appsettings.Development.json",
        "Y": "Y value from consumer startup",
        "Z": 0
    }
}