The following masked wrapper functions are now transparent w.r.t. their wrapped runtime signature (inspect.signature), and are now function types (types.FunctionType) instead of instances of one of the numpy.ma.extras._fromnxfunction classes:

• ma.atleast_1d
• ma.atleast_2d
• ma.atleast_3d
• ma.vstack, ma.row_stack
• ma.hstack
• ma.column_stack
• ma.dstack
• ma.stack
• ma.hsplit
• ma.diagflat

Stubtest now recognizes these as actual functions, so that they can now be meaningfully annotated in the stubs, without stubtest complaining about it.

To illustrate; running np.ma.stack? in an IPython console used to show

Signature:       np.ma.stack(x, *args, **params)
Type:            _fromnxfunction_seq
String form:     <numpy.ma.extras._fromnxfunction_seq object at 0x7161fe17a3f0>
File:            ~/.local/share/uv/tools/ipython/lib/python3.14/site-packages/numpy/ma/extras.py
Docstring:      
Join a sequence of arrays along a new axis.
[...]

which now looks like this:

Signature: np.ma.stack(arrays, axis=0, out=None, *, dtype=None, casting='same_kind')
Docstring:
Join a sequence of arrays along a new axis.
[...]