text: """Data simulation code."""
  
  from .evoked import simulate_evoked, simulate_noise_evoked, add_noise
  from .raw import simulate_raw, add_ecg, add_eog, add_chpi
  from .source import select_source_in_label, simulate_stc, simulate_sparse_stc
  from .source import SourceSimulator
  from .metrics import source_estimate_quantification
  