public Variable addMemberVariable( Variable v) {
    if (isImmutable()) throw new IllegalStateException("Cant modify");
    members.add( v);
    memberHash.put( v.getShortName(), v);
    v.setParentStructure( this);
    return v;
  }
public Variable addMemberVariable( Variable v) {
    if (isImmutable()) throw new IllegalStateException("Cant modify");
    members.add( v);
    memberHash.put( v.getShortName(), v);
    v.setParentStructure( this);
    return v;
  }
public Variable addMemberVariable ( Variable v ) { if ( isImmutable ( ) ) throw new IllegalStateException ( "Cant modify" ) ; members . add ( v ) ; memberHash . put ( v . getShortName ( ) , v ) ; v . setParentStructure ( this ) ; return v ; }
Add a member variable
@param v add this variable as a member of this structure
@return the added variable
Add a member variable