code: public void setAtoms(Atom[] atoms){
  		Structure s = new StructureImpl();
  		Chain c = new ChainImpl();
  		c.setId("A");
  		for (Atom a: atoms){
  			c.addGroup(a.getGroup());
  		}
  		s.addChain(c);
  		setStructure(s);
  	}
docs: Create and set a new structure from a given atom array.
  @param atoms