StructTypes.Mutable() does not call the inner constructor

[BlondDon]

using JSON3
using StructTypes

Base.@kwdef mutable struct MyType2
    c::Float64 = 3.0

    MyType2(c) = c < 0.0 ? error("bar") : new(c)
end

Base.@kwdef mutable struct MyType
    a::Int = 1
    b::MyType2 = MyType2(3.0)

    MyType(a,b) = a > 10 ? error("foo") : new(a,b)
end

StructTypes.StructType(::Type{MyType}) = StructTypes.Mutable()
StructTypes.StructType(::Type{MyType2}) = StructTypes.Mutable()

json_string = """{"a":11, "b":{"c":-3.0}}"""
hello_world = JSON3.read(json_string, MyType; parsequoted= true)

Dear JSON3.jl maintainers,

Lets assume i have a two mutable structs of MyType2 which is then nested into MyType.
I expect JSON3.read to trow an error since json_string has to invalid input according to inner constructor. My understand is that StuctTypes.Muable() calls an emtpy constructor and then mutates the arguements in order to deal with missing arguments in the json_string. I want it to be able top handly missing arguments but still call the innerconstructor to validate the input.
Is there a way to throw theses errors using StructTypes while parsing the “json_string”.
Due to legacy reasons i don’t want to change the structs to be immutable.
Tips are very appreciated, thank you for your support in advance.

best regards
BlondDon