public void addRoleName(String roleName){
  if (roleNames == null) {
    roleNames=New.arrayList();
  }
  roleNames.add(roleName);
}

public void addRoleName ( String roleName ) { if ( roleNames == null ) { roleNames = New . arrayList ( ) ; } roleNames . add ( roleName ) ; }
add the specified role to the list of roles .
