text: from molsysmt._private.digestion import digest_item, digest_atom_indices, digest_structure_indices
  
  def to_mdtraj_Trajectory(item, atom_indices='all', structure_indices='all', check=True):
  
      if check:
  
          digest_item(item, 'mdanalysis.Universe')
          atom_indices = digest_atom_indices(atom_indices)
          structure_indices = digest_structure_indices(structure_indices)
  
      from . import to_molsysmt_MolSys
      from ..molsysmt_MolSys import to_mdtraj_Trajectory as molsysmt_MolSys_to_mdtraj_Trajectory
  
      tmp_item = to_molsysmt_MolSys(item, atom_indices=atom_indices,
              structure_indices=structure_indices, check=False)
      tmp_item = molsysmt_MolSys_to_mdtraj_Trajectory(tmp_item, check=False)
  
      return tmp_item
  
  