code: public static List<QuatSymmetryResults> calcLocalSymmetries(
  			Structure structure, QuatSymmetryParameters symmParams,
  			SubunitClustererParameters clusterParams) {
  
  		Stoichiometry composition = SubunitClusterer.cluster(structure, clusterParams);
  		return calcLocalSymmetries(composition, symmParams);
  	}
docs: Returns a List of LOCAL symmetry results. This means that a subset of the
  {@link SubunitCluster} is left out of the symmetry calculation. Each
  element of the List is one possible LOCAL symmetry result.
  <p>
  Determine local symmetry if global structure is: (1) asymmetric, C1; (2)
  heteromeric (belongs to more than 1 subunit cluster); (3) more than 2
  subunits (heteromers with just 2 chains cannot have local symmetry)
  
  @param structure
  protein chains will be extracted as {@link Subunit}
  @param symmParams
  quaternary symmetry parameters
  @param clusterParams
  subunit clustering parameters
  @return List of LOCAL quaternary structure symmetry results. Empty if
  none.