code: def _compute_proj(A):
      """Compute the orthogonal projection operation for a manifold vector A."""
      U, _, _ = _safe_svd(A, full_matrices=False)
      return np.identity(A.shape[0]) - np.dot(U, U.T.conjugate())
  
file_path: mne-python/mne/beamformer/_rap_music.py
imports: import numpy
  from scipy import linalg
  from .._fiff.pick import pick_channels_forward, pick_info
  from ..fixes import _safe_svd
  from ..forward import convert_forward_solution, is_fixed_orient
  from ..inverse_sparse.mxne_inverse import _make_dipoles_sparse
  from ..minimum_norm.inverse import _log_exp_var
  from ..utils import _check_info_inv, fill_doc, logger, verbose
  from ._compute_beamformer import _prepare_beamformer_input
label_desc: Use image node_id 3 for calling a global function with example usage: _compute_proj(A) and returns: unknown