feature request: add a way to expose to python functions of sub classes as main class

Currently there is no way to expose to python a functions of sub / helper(object private) classes as if they were their own.
We use many such structs / classes to 'group' variables / functions in order to help manage things (some are thread safe, some are not, etc)
for now the only way that i know of is to create a wrapper function manually in the c code (but that would ruin our code structure and mislead)

code example:

class NBrokerAccountShared {
private:
	friend class NBrokerAccount;
	NBrokerAccountShared(){}
public:
	void otherFunc(){}
}

class NBrokerAccount{
public:
	NBrokerAccount() : mSharedData(new NBrokerAccountShared() {}
	void someFunction(){}
private:
	std::unique_ptr<NBrokerAccountShared> mSharedData;
}

xml:

<object-type name="NBrokerAccount">
</object-type>

i would like to have 'someFunction' and 'otherFunc' as if they were part of 'NBrokerAccount' while 'NBrokerAccountShared' should stay invisible to the python (generate=false)
i dont know whats the best way to achieve this
via add-function tags with some 'getter' param(NBrokerAccountShared::mSharedData)?