@Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Map other = (Map) obj;
        if (this.row != other.row) {
            return false;
        }
        if (this.column != other.column) {
            return false;
        }
        if (!Objects.equals(this.objectName, other.objectName)) {
            return false;
        }
        if (this.objectSymbol != other.objectSymbol) {
            return false;
        }
        if (this.objectState != other.objectState) {
            return false;
        }
        return true;
    }