code: def get_matlab_command():
      """Determine whether Matlab is installed and can be executed."""
      if "NIPYPE_NO_MATLAB" not in os.environ:
          from nipype.utils.filemanip import which
  
          return which(os.getenv("MATLABCMD", "matlab"))
  
file_path: nipype/nipype/interfaces/matlab.py
imports: import os
  from ..None import config
  from .base import CommandLineInputSpec, InputMultiPath, isdefined, CommandLine, traits, File, Directory
label_desc: Use image node_id 1 for calling a global function with example usage: get_matlab_command() and returns: which