To deserialize a class that contains another class from JSON format, you typically use a deserialization library that can handle nested objects. Here's a general approach, assuming you're using a language like Python with a library like `json`:
1. Define your outer and inner classes, ensuring that they both can be serialized and deserialized.
2. Use a deserialization method provided by your chosen library to convert the JSON string into an instance of your outer class, which will, in turn, contain an instance of your inner class.
For example, in Python:
```python
import json
class InnerClass:
def __init__(self, value):
self.value = value
class OuterClass:
def __init__(self, inner):
self.inner = inner
@classmethod
def from_json(cls, json_string):
json_dict = json.loads(json_string)
inner = InnerClass(**json_dict['inner'])
return cls(inner)
json_string = '{"inner": {"value": "some value"}}'
outer_instance = OuterClass.from_json(json_string)
```
In the example above, you have an `OuterClass` that contains an instance of `InnerClass`. The `from_json` class method on `OuterClass` handles the deserialization process by first converting the JSON string into a dictionary, then instantiating `InnerClass` with the appropriate data before finally creating an instance of `OuterClass`.
As for the second part of your question, I would rephrase "struct _profile {" as follows:
"Please provide a structured definition for a data structure named `_profile` using a `struct` declaration."