We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
mne.WatershedBEM creates incorrect command line
### Summary
The mne.WatershedBEM interface `_cmd` do not correspond to the behavior of the stable release of  mne [see documentation](https://martinos.org/mne/stable/generated/commands.html#create-bem-surfaces-using-the-watershed-algorithm-included-with-freesurfer)
 [This line](https://github.com/nipy/nipype/blob/f79581edc042ed38064f48e85b6dcc38bc30a084/nipype/interfaces/mne/base.py#L97) `_cmd = 'mne_watershed_bem'` should be `_cmd = 'mne watershed_bem'`
mne.WatershedBEM creates incorrect command line
### Summary
The mne.WatershedBEM interface `_cmd` do not correspond to the behavior of the stable release of  mne [see documentation](https://martinos.org/mne/stable/generated/commands.html#create-bem-surfaces-using-the-watershed-algorithm-included-with-freesurfer)
 [This line](https://github.com/nipy/nipype/blob/f79581edc042ed38064f48e85b6dcc38bc30a084/nipype/interfaces/mne/base.py#L97) `_cmd = 'mne_watershed_bem'` should be `_cmd = 'mne watershed_bem'`

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `nipype/interfaces/mne/base.py`
Content:
```
1 # -*- coding: utf-8 -*-
2 from __future__ import (print_function, division, unicode_literals,
3                         absolute_import)
4 from builtins import str, bytes
5 
6 import os.path as op
7 import glob
8 
9 from ... import logging
10 from ...utils.filemanip import simplify_list
11 from ..base import (traits, File, Directory, TraitedSpec, OutputMultiPath)
12 from ..freesurfer.base import FSCommand, FSTraitedSpec
13 
14 iflogger = logging.getLogger('nipype.interface')
15 
16 
17 class WatershedBEMInputSpec(FSTraitedSpec):
18     subject_id = traits.Str(
19         argstr='--subject %s',
20         mandatory=True,
21         desc='Subject ID (must have a complete Freesurfer directory)')
22     subjects_dir = Directory(
23         exists=True,
24         mandatory=True,
25         usedefault=True,
26         desc='Path to Freesurfer subjects directory')
27     volume = traits.Enum(
28         'T1',
29         'aparc+aseg',
30         'aseg',
31         'brain',
32         'orig',
33         'brainmask',
34         'ribbon',
35         argstr='--volume %s',
36         usedefault=True,
37         desc='The volume from the "mri" directory to use (defaults to T1)')
38     overwrite = traits.Bool(
39         True,
40         usedefault=True,
41         argstr='--overwrite',
42         desc='Overwrites the existing files')
43     atlas_mode = traits.Bool(
44         argstr='--atlas',
45         desc='Use atlas mode for registration (default: no rigid alignment)')
46 
47 
48 class WatershedBEMOutputSpec(TraitedSpec):
49     mesh_files = OutputMultiPath(
50         File(exists=True),
51         desc=('Paths to the output meshes (brain, inner '
52               'skull, outer skull, outer skin)'))
53     brain_surface = File(
54         exists=True,
55         loc='bem/watershed',
56         desc='Brain surface (in Freesurfer format)')
57     inner_skull_surface = File(
58         exists=True,
59         loc='bem/watershed',
60         desc='Inner skull surface (in Freesurfer format)')
61     outer_skull_surface = File(
62         exists=True,
63         loc='bem/watershed',
64         desc='Outer skull surface (in Freesurfer format)')
65     outer_skin_surface = File(
66         exists=True,
67         loc='bem/watershed',
68         desc='Outer skin surface (in Freesurfer format)')
69     fif_file = File(
70         exists=True,
71         loc='bem',
72         altkey='fif',
73         desc='"fif" format file for EEG processing in MNE')
74     cor_files = OutputMultiPath(
75         File(exists=True),
76         loc='bem/watershed/ws',
77         altkey='COR',
78         desc='"COR" format files')
79 
80 
81 class WatershedBEM(FSCommand):
82     """Uses mne_watershed_bem to get information from dicom directories
83 
84     Examples
85     --------
86 
87     >>> from nipype.interfaces.mne import WatershedBEM
88     >>> bem = WatershedBEM()
89     >>> bem.inputs.subject_id = 'subj1'
90     >>> bem.inputs.subjects_dir = '.'
91     >>> bem.cmdline
92     'mne_watershed_bem --overwrite --subject subj1 --volume T1'
93     >>> bem.run() 				# doctest: +SKIP
94 
95    """
96 
97     _cmd = 'mne_watershed_bem'
98     input_spec = WatershedBEMInputSpec
99     output_spec = WatershedBEMOutputSpec
100     _additional_metadata = ['loc', 'altkey']
101 
102     def _get_files(self, path, key, dirval, altkey=None):
103         globsuffix = '*'
104         globprefix = '*'
105         keydir = op.join(path, dirval)
106         if altkey:
107             key = altkey
108         globpattern = op.join(keydir, ''.join((globprefix, key, globsuffix)))
109         return glob.glob(globpattern)
110 
111     def _list_outputs(self):
112         outputs = self.output_spec().get()
113         subjects_dir = self.inputs.subjects_dir
114         subject_path = op.join(subjects_dir, self.inputs.subject_id)
115         output_traits = self._outputs()
116         mesh_paths = []
117         for k in list(outputs.keys()):
118             if k != 'mesh_files':
119                 val = self._get_files(subject_path, k,
120                                       output_traits.traits()[k].loc,
121                                       output_traits.traits()[k].altkey)
122                 if val:
123                     value_list = simplify_list(val)
124                     if isinstance(value_list, list):
125                         out_files = []
126                         for value in value_list:
127                             out_files.append(op.abspath(value))
128                     elif isinstance(value_list, (str, bytes)):
129                         out_files = op.abspath(value_list)
130                     else:
131                         raise TypeError
132                     outputs[k] = out_files
133                     if not k.rfind('surface') == -1:
134                         mesh_paths.append(out_files)
135         outputs['mesh_files'] = mesh_paths
136         return outputs
137
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/nipype/interfaces/mne/base.py b/nipype/interfaces/mne/base.py
--- a/nipype/interfaces/mne/base.py
+++ b/nipype/interfaces/mne/base.py
@@ -89,12 +89,12 @@
     >>> bem.inputs.subject_id = 'subj1'
     >>> bem.inputs.subjects_dir = '.'
     >>> bem.cmdline
-    'mne_watershed_bem --overwrite --subject subj1 --volume T1'
+    'mne watershed_bem --overwrite --subject subj1 --volume T1'
     >>> bem.run() 				# doctest: +SKIP
 
    """
 
-    _cmd = 'mne_watershed_bem'
+    _cmd = 'mne watershed_bem'
     input_spec = WatershedBEMInputSpec
     output_spec = WatershedBEMOutputSpec
     _additional_metadata = ['loc', 'altkey']

{"golden_diff": "diff --git a/nipype/interfaces/mne/base.py b/nipype/interfaces/mne/base.py\n--- a/nipype/interfaces/mne/base.py\n+++ b/nipype/interfaces/mne/base.py\n@@ -89,12 +89,12 @@\n     >>> bem.inputs.subject_id = 'subj1'\n     >>> bem.inputs.subjects_dir = '.'\n     >>> bem.cmdline\n-    'mne_watershed_bem --overwrite --subject subj1 --volume T1'\n+    'mne watershed_bem --overwrite --subject subj1 --volume T1'\n     >>> bem.run() \t\t\t\t# doctest: +SKIP\n \n    \"\"\"\n \n-    _cmd = 'mne_watershed_bem'\n+    _cmd = 'mne watershed_bem'\n     input_spec = WatershedBEMInputSpec\n     output_spec = WatershedBEMOutputSpec\n     _additional_metadata = ['loc', 'altkey']\n", "issue": "mne.WatershedBEM creates incorrect command line\n### Summary\r\nThe mne.WatershedBEM interface `_cmd` do not correspond to the behavior of the stable release of  mne [see documentation](https://martinos.org/mne/stable/generated/commands.html#create-bem-surfaces-using-the-watershed-algorithm-included-with-freesurfer)\r\n [This line](https://github.com/nipy/nipype/blob/f79581edc042ed38064f48e85b6dcc38bc30a084/nipype/interfaces/mne/base.py#L97) `_cmd = 'mne_watershed_bem'` should be `_cmd = 'mne watershed_bem'`\nmne.WatershedBEM creates incorrect command line\n### Summary\r\nThe mne.WatershedBEM interface `_cmd` do not correspond to the behavior of the stable release of  mne [see documentation](https://martinos.org/mne/stable/generated/commands.html#create-bem-surfaces-using-the-watershed-algorithm-included-with-freesurfer)\r\n [This line](https://github.com/nipy/nipype/blob/f79581edc042ed38064f48e85b6dcc38bc30a084/nipype/interfaces/mne/base.py#L97) `_cmd = 'mne_watershed_bem'` should be `_cmd = 'mne watershed_bem'`\n", "before_files": [{"content": "# -*- coding: utf-8 -*-\nfrom __future__ import (print_function, division, unicode_literals,\n                        absolute_import)\nfrom builtins import str, bytes\n\nimport os.path as op\nimport glob\n\nfrom ... import logging\nfrom ...utils.filemanip import simplify_list\nfrom ..base import (traits, File, Directory, TraitedSpec, OutputMultiPath)\nfrom ..freesurfer.base import FSCommand, FSTraitedSpec\n\niflogger = logging.getLogger('nipype.interface')\n\n\nclass WatershedBEMInputSpec(FSTraitedSpec):\n    subject_id = traits.Str(\n        argstr='--subject %s',\n        mandatory=True,\n        desc='Subject ID (must have a complete Freesurfer directory)')\n    subjects_dir = Directory(\n        exists=True,\n        mandatory=True,\n        usedefault=True,\n        desc='Path to Freesurfer subjects directory')\n    volume = traits.Enum(\n        'T1',\n        'aparc+aseg',\n        'aseg',\n        'brain',\n        'orig',\n        'brainmask',\n        'ribbon',\n        argstr='--volume %s',\n        usedefault=True,\n        desc='The volume from the \"mri\" directory to use (defaults to T1)')\n    overwrite = traits.Bool(\n        True,\n        usedefault=True,\n        argstr='--overwrite',\n        desc='Overwrites the existing files')\n    atlas_mode = traits.Bool(\n        argstr='--atlas',\n        desc='Use atlas mode for registration (default: no rigid alignment)')\n\n\nclass WatershedBEMOutputSpec(TraitedSpec):\n    mesh_files = OutputMultiPath(\n        File(exists=True),\n        desc=('Paths to the output meshes (brain, inner '\n              'skull, outer skull, outer skin)'))\n    brain_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Brain surface (in Freesurfer format)')\n    inner_skull_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Inner skull surface (in Freesurfer format)')\n    outer_skull_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Outer skull surface (in Freesurfer format)')\n    outer_skin_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Outer skin surface (in Freesurfer format)')\n    fif_file = File(\n        exists=True,\n        loc='bem',\n        altkey='fif',\n        desc='\"fif\" format file for EEG processing in MNE')\n    cor_files = OutputMultiPath(\n        File(exists=True),\n        loc='bem/watershed/ws',\n        altkey='COR',\n        desc='\"COR\" format files')\n\n\nclass WatershedBEM(FSCommand):\n    \"\"\"Uses mne_watershed_bem to get information from dicom directories\n\n    Examples\n    --------\n\n    >>> from nipype.interfaces.mne import WatershedBEM\n    >>> bem = WatershedBEM()\n    >>> bem.inputs.subject_id = 'subj1'\n    >>> bem.inputs.subjects_dir = '.'\n    >>> bem.cmdline\n    'mne_watershed_bem --overwrite --subject subj1 --volume T1'\n    >>> bem.run() \t\t\t\t# doctest: +SKIP\n\n   \"\"\"\n\n    _cmd = 'mne_watershed_bem'\n    input_spec = WatershedBEMInputSpec\n    output_spec = WatershedBEMOutputSpec\n    _additional_metadata = ['loc', 'altkey']\n\n    def _get_files(self, path, key, dirval, altkey=None):\n        globsuffix = '*'\n        globprefix = '*'\n        keydir = op.join(path, dirval)\n        if altkey:\n            key = altkey\n        globpattern = op.join(keydir, ''.join((globprefix, key, globsuffix)))\n        return glob.glob(globpattern)\n\n    def _list_outputs(self):\n        outputs = self.output_spec().get()\n        subjects_dir = self.inputs.subjects_dir\n        subject_path = op.join(subjects_dir, self.inputs.subject_id)\n        output_traits = self._outputs()\n        mesh_paths = []\n        for k in list(outputs.keys()):\n            if k != 'mesh_files':\n                val = self._get_files(subject_path, k,\n                                      output_traits.traits()[k].loc,\n                                      output_traits.traits()[k].altkey)\n                if val:\n                    value_list = simplify_list(val)\n                    if isinstance(value_list, list):\n                        out_files = []\n                        for value in value_list:\n                            out_files.append(op.abspath(value))\n                    elif isinstance(value_list, (str, bytes)):\n                        out_files = op.abspath(value_list)\n                    else:\n                        raise TypeError\n                    outputs[k] = out_files\n                    if not k.rfind('surface') == -1:\n                        mesh_paths.append(out_files)\n        outputs['mesh_files'] = mesh_paths\n        return outputs\n", "path": "nipype/interfaces/mne/base.py"}], "after_files": [{"content": "# -*- coding: utf-8 -*-\nfrom __future__ import (print_function, division, unicode_literals,\n                        absolute_import)\nfrom builtins import str, bytes\n\nimport os.path as op\nimport glob\n\nfrom ... import logging\nfrom ...utils.filemanip import simplify_list\nfrom ..base import (traits, File, Directory, TraitedSpec, OutputMultiPath)\nfrom ..freesurfer.base import FSCommand, FSTraitedSpec\n\niflogger = logging.getLogger('nipype.interface')\n\n\nclass WatershedBEMInputSpec(FSTraitedSpec):\n    subject_id = traits.Str(\n        argstr='--subject %s',\n        mandatory=True,\n        desc='Subject ID (must have a complete Freesurfer directory)')\n    subjects_dir = Directory(\n        exists=True,\n        mandatory=True,\n        usedefault=True,\n        desc='Path to Freesurfer subjects directory')\n    volume = traits.Enum(\n        'T1',\n        'aparc+aseg',\n        'aseg',\n        'brain',\n        'orig',\n        'brainmask',\n        'ribbon',\n        argstr='--volume %s',\n        usedefault=True,\n        desc='The volume from the \"mri\" directory to use (defaults to T1)')\n    overwrite = traits.Bool(\n        True,\n        usedefault=True,\n        argstr='--overwrite',\n        desc='Overwrites the existing files')\n    atlas_mode = traits.Bool(\n        argstr='--atlas',\n        desc='Use atlas mode for registration (default: no rigid alignment)')\n\n\nclass WatershedBEMOutputSpec(TraitedSpec):\n    mesh_files = OutputMultiPath(\n        File(exists=True),\n        desc=('Paths to the output meshes (brain, inner '\n              'skull, outer skull, outer skin)'))\n    brain_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Brain surface (in Freesurfer format)')\n    inner_skull_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Inner skull surface (in Freesurfer format)')\n    outer_skull_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Outer skull surface (in Freesurfer format)')\n    outer_skin_surface = File(\n        exists=True,\n        loc='bem/watershed',\n        desc='Outer skin surface (in Freesurfer format)')\n    fif_file = File(\n        exists=True,\n        loc='bem',\n        altkey='fif',\n        desc='\"fif\" format file for EEG processing in MNE')\n    cor_files = OutputMultiPath(\n        File(exists=True),\n        loc='bem/watershed/ws',\n        altkey='COR',\n        desc='\"COR\" format files')\n\n\nclass WatershedBEM(FSCommand):\n    \"\"\"Uses mne_watershed_bem to get information from dicom directories\n\n    Examples\n    --------\n\n    >>> from nipype.interfaces.mne import WatershedBEM\n    >>> bem = WatershedBEM()\n    >>> bem.inputs.subject_id = 'subj1'\n    >>> bem.inputs.subjects_dir = '.'\n    >>> bem.cmdline\n    'mne watershed_bem --overwrite --subject subj1 --volume T1'\n    >>> bem.run() \t\t\t\t# doctest: +SKIP\n\n   \"\"\"\n\n    _cmd = 'mne watershed_bem'\n    input_spec = WatershedBEMInputSpec\n    output_spec = WatershedBEMOutputSpec\n    _additional_metadata = ['loc', 'altkey']\n\n    def _get_files(self, path, key, dirval, altkey=None):\n        globsuffix = '*'\n        globprefix = '*'\n        keydir = op.join(path, dirval)\n        if altkey:\n            key = altkey\n        globpattern = op.join(keydir, ''.join((globprefix, key, globsuffix)))\n        return glob.glob(globpattern)\n\n    def _list_outputs(self):\n        outputs = self.output_spec().get()\n        subjects_dir = self.inputs.subjects_dir\n        subject_path = op.join(subjects_dir, self.inputs.subject_id)\n        output_traits = self._outputs()\n        mesh_paths = []\n        for k in list(outputs.keys()):\n            if k != 'mesh_files':\n                val = self._get_files(subject_path, k,\n                                      output_traits.traits()[k].loc,\n                                      output_traits.traits()[k].altkey)\n                if val:\n                    value_list = simplify_list(val)\n                    if isinstance(value_list, list):\n                        out_files = []\n                        for value in value_list:\n                            out_files.append(op.abspath(value))\n                    elif isinstance(value_list, (str, bytes)):\n                        out_files = op.abspath(value_list)\n                    else:\n                        raise TypeError\n                    outputs[k] = out_files\n                    if not k.rfind('surface') == -1:\n                        mesh_paths.append(out_files)\n        outputs['mesh_files'] = mesh_paths\n        return outputs\n", "path": "nipype/interfaces/mne/base.py"}]}