public void setPlaceholder(int index, Ptg token) {if (_ptgs[index] != null) {throw new IllegalStateException("Invalid placeholder index (" + index + ")");}_ptgs[index] = token;}

public void setPlaceholder ( int index , Ptg token ) { if ( _ptgs [ index ] != null ) { throw new IllegalStateException ( "Invalid placeholder index (" + index + ")" ) ; } _ptgs [ index ] = token ; }
public void SetPlaceholder(int index, Ptg token){if (_ptgs[index] != null){throw new InvalidOperationException("Invalid placeholder index (" + index + ")");}_ptgs[index] = token;}
