We should opt for immutability when we can

[xibz]

When constructing objects, we can freely change them whenever via the setters. I would not to not allow for this and go with a more immutable approach.

[aalmiray]

The jsonschema2pojo plugin allows generating builders associated with pojos, that way pojo classes may remain immutable while the builders provide mutability. However, this would constitute a breaking change in API usage. Given that the API is still pre 1.0.0 is permissible but such change (if green lighted) must be communicated in advance to consumers.

cc: @afrittoli @rjalander